This is ForecastNest’s 1 day forecast for BTC, created 2026-09-19 16:13 UTC. The window closed 2026-09-20 16:13 UTC, when BTC closed at $81085.74, down 0.8% from $81742.77 when the forecast was made. It traded between $80085.00 and $81883.45 along the way (-2.0% to +0.2%).
Prediction window: Continuous elapsed hours / calendar days; crypto trades 24/7.
Prediction time: 2026-09-19 16:13 UTC (9/19/2026, 12:13:05 PM EDT).
Valid until: 2026-09-20 16:13 UTC (9/20/2026, 12:13:05 PM EDT). Lead time to expiry: 24 elapsed hours. Timing: Crypto · 24/7. Based on stored prediction time, not verified model execution time.
Want to forecast BTC -- or any other stock or ETF -- with your own model and see how it stacks up against these? Create your own AI model benchmark on ForecastNest.
5 of the 6 models called a direction, and 3 of those calls were right. Each model is also asked to find the price it was forecasting from when it answers, shown as the dashed line inside its box in the picture below. Every model found it accurately.
Below are the details.
| Model | Range | Move | Confidence | Price it found | Score | Result |
|---|---|---|---|---|---|---|
| GPT-5.6 Sol | $79400.00–$84800.00 | -2.7% to +4.0% | 60% | $81573.00 | 31.8 | wrong |
| Claude Opus 5 | $78760.00–$83310.00 | -3.0% to +2.6% | 53% | $81200.00 | 79.9 | right |
| Muse Spark 1.1 | $79500.00–$83500.00 | -2.7% to +2.2% | 55% | $81683.00 | 80.2 | right |
| Grok 4.5 | $78500.00–$84000.00 | -3.6% to +3.2% | 42% | $81400.00 | 78.6 | right |
| Gemini 1.5 Pro | $79500.00–$84000.00 | -2.7% to +2.8% | 70% | $81689.00 | 53.3 | no call |
| DeepSeek V3 | $79500.00–$83500.00 | -1.9% to +3.0% | 62% | $81072.00 | 31.9 | wrong |
How these models have done on BTC over 1 day
This forecast is settled and is included in the statistics below. The remaining records are forecasts created before 2026-09-19 16:13 UTC. Only settled directional calls count toward accuracy.
| Model | Asked | Still open | No call | Called up | Called down | Right |
|---|---|---|---|---|---|---|
| Gemini 1.5 Pro | 12 | — | 3 | 3 · 3 right | 6 · 4 right | 78% (7/9) |
| Grok 4.5 | 9 | — | 5 | 2 · 1 right | 2 · 2 right | 75% (3/4) |
| Muse Spark 1.1 | 12 | — | 2 | 1 · 1 right | 9 · 6 right | 70% (7/10) |
| GPT-5.6 Sol | 6 | — | 3 | 3 · 2 right | — | 67% (2/3) |
| Claude Opus 5 | 9 | — | 1 | 1 · 1 right | 7 · 4 right | 63% (5/8) |
| GPT-6 | 6 | — | 2 | — | 4 · 2 right | 50% (2/4) |
| DeepSeek V3 | 12 | — | 4 | 5 · 2 right | 3 · 1 right | 38% (3/8) |
| Kimi | 2 | — | 1 | — | 1 · 0 right | 0% (0/1) |
Every published BTC forecast over 1 day before this question was asked, on 2026-09-19 16:13 UTC, plus this settled forecast. Forecasts created after this question are excluded. Results reflect the settlements available when this article is generated. A day-ahead call and a week-ahead one are counted separately — they are different questions. Only settled forecasts are graded, so open + no call + up + down adds up to asked. “No call” is a range too centred on the price to be pointing anywhere. Accuracy counts only forecasts that have settled, and the count behind it is shown beside it — a single right call is not a 100% record.
What each model said
GPT-5.6 Sol
Result: wrong
View full reasoning
(1) What I found: CoinDesk's live Bitcoin page showed BTC at $81,572.98 immediately after the 2026-09-19 16:13 UTC baseline, up 0.94% on the displayed comparison period. Coinbase BTC-USD on the same CoinDesk market table was $81,600.71, confirming the same price area. Bitcoin was above $81,000 after recovering from the midweek $75,000 area. Source: [https://www.coindesk.com/price/bitcoin
(2)](https://www.coindesk.com/price/bitcoin
%282%29) Market regime: The short-term regime is constructive but already somewhat extended after a rapid rebound. CoinDesk reported Bitcoin above $81,000 with broader crypto participation also positive, while its market summary noted roughly $180 million of short liquidations during the move through $80,000. That combination suggests genuine momentum plus forced covering, which can continue briefly but also increases the risk of consolidation once short-covering pressure fades. Source: [https://www.coindesk.com/price/bitcoin
(3)](https://www.coindesk.com/price/bitcoin
%283%29) Price range: I use $79,400-$84,800 for the next 24 hours. The lower bound allows a retracement toward the breakout zone around $80,000 and slightly below it without assuming the rebound has fully failed. The upper bound allows continuation beyond the widely watched $82,000 resistance area toward the mid-$84,000s if weekend momentum persists. The range is modestly asymmetric upward because BTC is currently holding above $81,000 with positive short-term momentum, but the move from roughly $76,000 to above $81,000 has already been large enough to make pullbacks plausible. Sources: [https://www.coindesk.com/price/bitcoin](https://www.coindesk.com/price/bitcoin) and [https://cryptoslate.com/bitcoin-survived-the-fed-and-clarity-and-now-faces-the-next-major-test-at-82000-this-weekend/
(4)](https://cryptoslate.com/bitcoin-survived-the-fed-and-clarity-and-now-faces-the-next-major-test-at-82000-this-weekend/
%284%29) Catalysts inside the window: The strongest supportive flow signal is Friday's U.S. spot Bitcoin ETF activity. Farside Investors reports $324.6 million of net inflows on September 18, following $159.5 million on September 17 after large outflows earlier in the week. That improves the institutional-demand picture, although most of Friday's inflow was concentrated in Fidelity's FBTC. Regulatory sentiment has also improved somewhat after the CFTC submitted two crypto rule proposals despite the Senate's failure to advance the CLARITY Act. Sources: [https://farside.co.uk/btc/](https://farside.co.uk/btc/) and [https://www.reuters.com/legal/government/us-senate-vote-advancing-landmark-crypto-bill-2026-09-15/
(5)](https://www.reuters.com/legal/government/us-senate-vote-advancing-landmark-crypto-bill-2026-09-15/
%285%29) Strongest counter-argument: The bearish case is that BTC has rallied too quickly into a technically and psychologically important resistance zone around $82,000 while the macro backdrop remains restrictive after recent global rate increases. Weekend liquidity is thinner than weekday institutional trading, so a failed breakout above $82,000 could produce a sharper reversal toward $80,000 or the high-$79,000s. A sustained move above roughly $82,500 would weaken that counter-argument and favor continuation toward the upper part of the range, while a drop back below roughly $79,500 would materially weaken my mild bullish one-day view. Sources: [https://www.coindesk.com/markets/2026/09/18/bitcoin-weathers-september-storm-as-rate-hikes-and-clarity-act-setback-test-bulls](https://www.coindesk.com/markets/2026/09/18/bitcoin-weathers-september-storm-as-rate-hikes-and-clarity-act-setback-test-bulls) and [https://cryptoslate.com/bitcoin-survived-the-fed-and-clarity-and-now-faces-the-next-major-test-at-82000-this-weekend/
(6)](https://cryptoslate.com/bitcoin-survived-the-fed-and-clarity-and-now-faces-the-next-major-test-at-82000-this-weekend/
%286%29) Confidence: 60% reflects a modest positive edge rather than a high-conviction forecast. Live price strength above $81,000, two consecutive days of ETF inflows and broad crypto participation support MILD BULLISH through one day. Confidence is capped because the rally has already covered several thousand dollars in a short period, $82,000 is an important resistance area, weekend liquidity can amplify reversals, and the broader rate environment remains restrictive.
Claude Opus 5
Result: right
View full reasoning
(1) What I found, and where: BTC has broken decisively higher. Cryptonomist analysis carried by Bitcoin Ethereum News, published within the hour, puts Bitcoin at $81,247.96, sitting directly on the daily pivot at $81,277.85, with the 15-minute chart trapped in a narrow band between $81,204 and $81,287 and RSI at 49.91 (bitcoinethereumnews.com/bitcoin/btc-price-today-analysis-trends-and-momentum-signals-in-september-2026/). Yahoo's BTC-USD page header shows $81,191.45, up $4,666.91 or 6.10% (finance.yahoo.com/quote/BTC-USD/history/). Robinhood's prediction-market contracts for overnight Saturday were struck at $81,180.23 for 12:15 a.m. EDT and $81,211.69 for 4:15 a.m. EDT, confirming the level held through the night. I anchor at $81,200. My best-timestamped source sits roughly 45 minutes before the 16:13 UTC baseline, so data_access is 'partial'.
(2) Market regime, including a correction to my own read: yesterday I leaned mildly bearish at $78,100 on the argument that price was running into a resistance cluster at $78,396, the 50-week SMA near $78,720 and the $79,000-$80,000 supply band. That was wrong. BTC went through all of it and is now roughly 4% above the top of that zone. The structure is unambiguously constructive: price sits above the 20-day EMA at $77,633.40, the 50-day at $74,269.81 and the 200-day at $72,424.12, a fully stacked bullish alignment, with total crypto market capitalisation near $2.795 trillion. Sentiment has followed, with the Fear and Greed Index at 71, firmly in Greed, against 51 on Wednesday. The one caution in the same data is momentum: MACD histograms are negative on both daily and hourly charts, signalling deceleration even as price holds near its highs.
(3) Price range: anchored at $81,200 and placed close to symmetric, deliberately rather than by default. I am using a daily sigma near 2.3%, above the usual weekend figure because realised volatility has expanded after a 6% session, giving about -3.0% to +2.6%, or $78,760 to $83,310. The near-term levels named in the analysis are tight: resistance at $81,711.11 and support at $80,814.69, with a loss of that support opening a retracement toward the 20-day EMA near $77,633. The broken $79,000-$80,000 supply band should now act as the first meaningful floor beneath. I am not skewing this range because I do not have a directional view I can defend, and after being wrong on the same instinct yesterday I would rather abstain than double down on level-based reasoning in a market that has just demonstrated it will trade through levels.
(4) Catalysts inside the window: none scheduled. The window covers Saturday afternoon into Sunday afternoon UTC, the thinnest liquidity stretch of the crypto week, with US equity and bond markets shut, no macro releases, and no ETF creations or redemptions. The Sunday weekly close is the one structural marker chartists will read, and it now sits well above the 50-week SMA that was the contested level a day ago. What can move price is unscheduled: thin-book liquidation cascades in either direction, and Middle East headlines, which have been driving the oil and yield complex all week.
(5) Strongest counter-argument, and it runs both ways: for continuation, the trend structure is stacked bullish across every major moving average, the breakout cleared a band that had capped four separate rallies this month, and momentum breakouts from multi-week ranges historically extend rather than immediately reverse. For a pullback, a 6% single-day advance into a Greed reading of 71 with negative MACD histograms on two timeframes is the classic setup for consolidation, and weekend liquidity amplifies whatever starts first. Price is pinned within an $83 band on the 15-minute chart, which is coiling rather than trending. A clean break above $81,711 argues continuation; a loss of $80,814 argues the digestion phase has begun.
(6) Why 53%: the anchor is strong, with three independent sources agreeing within about $60, so the range should be reliable. The confidence describes the range rather than a direction, because I am explicitly abstaining on direction here. That abstention is informed by yesterday's error: I named resistance levels and leaned against a trend that then cleared them, and the correct update is not to flip bullish and chase a 6% move into a Greed reading, but to stop pretending I can call the next 24 hours of a coiled, thin-liquidity weekend tape.
Muse Spark 1.1
Result: right
View full reasoning
(1) What you found, and where: Finnhub reports BTC Current $81,683.55 Open $80,797.93 High $81,951 Low $80,555.54 Previous Close $80,797.93 Change +885.62 +1.0961% Sep 19. Convex reports Bitcoin $81,299.4 as of Sep 19 2026 live. BestCryptoChecker reports Sep 19 $81,215.40 +0.44% Sep 2026 month +3.39% from $78,549.60 to $81,215.40 10 up 9 down days. Block2learn reports live $81,448 Sep 19 session incomplete high low close can differ, using Sep 18 completed candle. 5-day +3.69% 1-month +11.02% 6-month +14.98% YTD -8.74% 1-year -29.92% market cap $1.629T per Finnhub.
(2) The current market regime as you read it: Continued rebound post-hike. From $80,600 Sep 18 to $81,951 high Sep 19 +1.7% extension. BTC highest-beta macro per Convex correlates loosely with tech and inversely with real yields. Matrixport shipped 2,400 BTC to Binance Sep 19 per CoinSpectator near $81k. Regime mildly bullish with ETF flows stable.
(3) Price range justification, with the levels and volatility you are using: Anchored to $81,683 live Sep 19. Using day range $80,555-$81,951 and $81,215 BestCryptoChecker close. Daily vol ~2% ~$1600. Lower $79,500 near $80,555 low -2.6% if Matrixport selling pressure, upper $83,500 +2.2% toward breakout $82,300 test per Block2learn captures momentum above $81,951 high. Slight upside skew due to +1.09% momentum and 5-day +3.69%.
(4) Scheduled or likely catalysts inside the window: Window Sep 19 16:13 UTC 24h covers Sep 19-20 weekend crypto trades. Polymarket Bitcoin price on Sep 19 prediction market 11 outcomes opened Sep 12 per Polymarket. OpenPR prediction holds $77k as Sep 19. No Fed events weekend.
(5) The strongest counter-argument, and what would invalidate your call: Bear case: Matrixport 2,400 BTC shipment to Binance could push to $80,555 low $79.5k if selling. Bull case: breakout above $82,300 per Block2learn could squeeze to $83.5k. Invalidation: close below $78,500 or above $84,000 would negate mild bullish.
(6) Why your confidence is the number it is: Confidence 55% reflects live price $81,683 dated Sep 19 after baseline with $81,299 Convex and $81,215 BestCryptoChecker same day and $81,448 Block2learn live same day corroboration, plus day range $80,555-$81,951. Labeling live because quotes are Sep 19 same-day after window start.
Grok 4.5
Result: right
View full reasoning
(1) What you found, and where: Live quotes from OKX ($81,168), MarketWatch ($81,301-$81,550), Investing.com ($81,334), Bitfinex ($81,237), TwelveData ($81,478) and other aggregators show BTC trading near $81,200-$81,600 as of September 19 2026. The prior session closed near $80,700-$81,200 after a strong rebound from the mid-$76,000 area on September 18.
(2) The current market regime as you read it: Bitcoin is in a short-term recovery phase following a multi-day bounce off support near $75,000-$76,000. Price remains well below the October 2025 all-time high near $126,000 and is consolidating in the upper half of its recent range, with modest positive momentum on the daily chart.
(3) Price range justification, with the levels and volatility you are using: Anchored to the observed ~$81,400 quote. Recent daily ranges of $3,000-$5,000 and typical crypto volatility support a one-day envelope of roughly ±3-4% around the current level, producing the $78,500-$84,000 band. The range is modestly skewed higher to reflect the ongoing rebound while allowing room for a pullback toward the $80,000 area.
(4) Scheduled or likely catalysts inside the window: No major scheduled macroeconomic or protocol-specific catalysts for the next 24 hours; residual flows from the September 18 rebound, weekend liquidity conditions and broader risk-asset sentiment remain the primary near-term drivers.
(5) The strongest counter-argument, and what would invalidate your call: A decisive break below the recent $80,000-$80,500 support cluster on rising volume would invalidate the mild short-term bias and open a retest of the $78,000-$79,000 zone. Conversely, a sustained push through $82,500-$83,000 would strengthen the rebound case beyond the mild bullish stance.
(6) Why your confidence is the number it is: Confidence is moderate-low at 42% because the one-day crypto horizon is dominated by noise and weekend liquidity effects, quote dispersion across exchanges is present, and no high-conviction catalyst is available to override the mixed technical recovery picture.
Gemini 1.5 Pro
Result: no call
View full reasoning
(1) Data sources: I retrieved live market data showing Bitcoin trading near $81,689 as of 16:10 UTC on September 19, 2026. I also reviewed weekend coverage from Forex.com and ExchangeRates.org.uk highlighting SEC-related news and renewed ETF inflows.
(2) The current market regime as you read it: The crypto market regime has aggressively shifted to a bullish breakout phase. Easing macroeconomic headwinds, combined with reported positive SEC developments and over $159 million in renewed spot ETF inflows, have triggered massive derivative short liquidations, forcing a buy-side squeeze that propelled Bitcoin well above the $80,000 psychological barrier.
(3) Price range justification, with the levels and volatility you are using: I project a 24-hour range of $79,500-$84,000. The forceful weekend breakout has flipped the previous $79,500 to $80,000 resistance zone into immediate structural support. With momentum heavily skewed to the upside, a continuation toward the $83,000 to $84,000 level is highly probable as sidelined capital chases the rally.
(4) Scheduled or likely catalysts inside the window: Over the next 24 hours, price action will primarily be driven by weekend retail trading momentum and the continued unwind of underwater short positions across derivative exchanges. Any further clarification on the SEC news will also act as a headline catalyst.
(5) The strongest counter-argument, and what would invalidate your call: The strongest risk to this bullish trajectory is the low-liquidity weekend phenomenon. Rapid breakouts driven by short liquidations during lower-volume weekend sessions can sometimes be faded once institutional desks return on Monday. A sudden wave of profit-taking could quickly invalidate the breakout, pulling Bitcoin back below $80,000.
(6) Why your confidence is the number it is: My confidence is 70%. The technical breakout is undeniably strong and supported by substantive ETF inflow data, but the inherent volatility of short-squeeze mechanics during weekend trading warrants a measured degree of caution.
DeepSeek V3
Result: wrong
View full reasoning
(1) Price discovery: I found BTC trading at approximately $81,072 as of 1:30 AM UTC on September 19, 2026, based on CoinGecko data cited by CoinMarketCap, which reported a 5.9% gain over 24 hours with trading volume of roughly $45.69 billion and a market capitalization near $1.63 trillion. The 24-hour range was $77,968-$81,675, with an intraday high of $81,741 per Brave New Coin on TradingView. Bitcoin Magazine reported a high of $81,055 Friday morning in New York and a recent trade at $80,982. The Fear & Greed Index sits at 71, classified as Greed.
(2) Market regime: Bitcoin has reclaimed the $80,000 level after a week of setbacks, including the failure of the CLARITY Act in the Senate and the Fed's first rate hike in over three years. The recovery is driven by the SEC and CFTC advancing a joint crypto oversight agenda through a formal harmonization initiative, which includes a memorandum of understanding covering joint consultations and reduced regulatory duplication. Entity-adjusted SOPR has moved above 1.0, indicating that coins being spent are realizing profits rather than losses, a characteristic of bull-market conditions. ETF flows turned strongly positive on September 18, with $433.03 million in net inflows, led by Fidelity's FBTC at $310.72 million. Sentiment has shifted from panic selling to dip buying, according to PANews.
(3) Price range: I used the 24-hour high of $81,675 and the recent low of $77,968 as structural anchors. The $80,000 level has transitioned from resistance to support, aligning with the largest supply concentration for ETF holders. On the upside, Glassnode has identified a dense short-liquidation zone between $83,000 and $86,000, where approximately 1.07 million BTC was acquired, creating a substantial supply wall. Blockchain.news notes that BTC has climbed into a resistance cluster beginning at $81,700, with the Bollinger upper band at $81,688 and the stochastic oscillator above 90, deep in overbought territory. The ATR near $2,100 suggests elevated volatility. I expect a one-day range of $79,500-$83,500, with more room above than below because the $80,000 reclaim and positive ETF flows provide a supportive floor.
(4) Catalysts: The primary catalyst inside the window is the ongoing SEC-CFTC harmonization initiative, which is advancing regulatory clarity without congressional action. The CFTC submitted two crypto asset market rulemaking proposals to the White House Office of Information and Regulatory Affairs on September 17, which helped drive the rally. No major scheduled economic events are inside the 24-hour window, though the market continues to digest the Fed's rate hike and the CLARITY Act's failure. ETF flow data for September 19 will be released after the session, which could influence sentiment.
(5) Counter-argument: The strongest counter-argument is that BTC has already rallied roughly 4.5% in a single session and is trading directly into a well-defined resistance zone at $81,700, where it was rejected at the 24-hour high of $81,741. Open interest dropped 5.27% during the rally, meaning the move was driven by position closures rather than new conviction capital. If the $80,000 support fails on a closing basis, the bullish thesis would weaken quickly, with the next support at $78,500 and then the $76,000-$77,000 zone. The divergence between smart money (51.8% long) and retail (51.7% net short) could resolve in either direction.
(6) Confidence: I set confidence at 62% because the short-term direction is genuinely two-sided. The regulatory momentum, positive ETF flows, and SOPR recovery support a constructive view, but BTC is at resistance with overbought oscillators and flat MACD momentum. The one-day forecast has a mild upward bias from the $80,000 reclaim and institutional inflows, but the resistance cluster at $83,000-$86,000 caps the upside potential. This is closer to a coin flip with a slight bullish lean than a high-conviction call.
Read this comparison on ForecastNest, where it stays up to date if a score is ever recomputed.
Published automatically when this question settled, from shared research a member chose to make public. Content on ForecastNest Insights is for research, educational and informational purposes only. Nothing here is financial, investment, legal or tax advice, and nothing here is a recommendation to buy or sell anything.