Head to head on 23 boards: Anthropic places best on 12, OpenAI places best on 10 and StepFun places best on 1. All 3 ranked on 6 of 26 boards.
Two at a time on this screen. Tap one to swap it in.
| Board | Read |  StepFun |  Anthropic |  OpenAI |
|---|
| Chat2 | | | | |
|---|
 Text ArenaArena ratingtodaytoday | Nov 9todaytoday | #701,448Step 5 Preview | #41,505best of the pickedClaude Opus 5.5 | #191,485GPT-5.6 Sol |
 MultiChallengeScoretodaytoday | Nov 9todaytoday | | #1067.7%Claude Haiku 5.5 | #182.0%best of the pickedGPT-6.1 Sol |
| Reasoning7 | | | | |
|---|
 AA IntelligenceIndextodaytoday | Nov 9todaytoday | #2328.5Step 5 Preview | #259.1best of the pickedClaude Opus 5.5 | #356.9GPT-6 Astra |
| HLEAccuracytodaytoday | Nov 9todaytoday | | #246.5%Claude Fable 5.1 | #154.8%best of the pickedGPT-6 Astra |
 Epoch ECIECItodaytoday | Nov 9todaytoday | | #3168.4Claude Opus 5.5 | #1169.1best of the pickedGPT-6 Astra |
 ARC-AGI-2Scoretodaytoday | Nov 9todaytoday | | #393.3%Claude Opus 5.5 | #195.0%best of the pickedGPT-6 Astra |
 LiveBenchGlobal averagetodaytoday | Nov 9todaytoday | | #183.4%best of the pickedClaude Fable 5.1 | #482.2%GPT-6 Astra |
| GPQA DiamondAccuracytodaytoday | Nov 9todaytoday | | #395.6%Claude Sonnet 5.5 | #295.8%best of the pickedGPT-6 Astra |
 MMLU-ProAccuracy · staletodaytoday | Nov 9todaytoday | | #489.1%Claude Opus 4.6 | #389.3%best of the pickedo1 |
| Coding4 | | | | |
|---|
| WebDev ArenaArena ratingtodaytoday | Nov 9todaytoday | #381,572Step 5 Preview | #11,814best of the pickedClaude Opus 5.5 | #31,770GPT-6 Astra |
| SWE-Bench ProResolvedtodaytoday | Nov 9todaytoday | | #198.0%best of the pickedClaude Opus 5 | #490.2%GPT-6 Astra |
 SWE-bench VerifiedResolved · staletodaytoday | Nov 9todaytoday | | #176.8%best of the pickedClaude Opus 4.5 | #672.8%GPT-5.2 |
 Aider PolyglotPass rate · staletodaytoday | Nov 9todaytoday | | #1072.0%Claude Opus 4 | #188.0%best of the pickedGPT-5 |
| Agents and tools3 | | | | |
|---|
 BFCLOverall accuracy · staletodaytoday | Nov 9todaytoday | | #177.5%best of the pickedClaude Opus 4.5 | #763.0%o3 |
| Search ArenaArena ratingtodaytoday | Nov 9todaytoday | | #51,229Claude Fable 5 | #11,255best of the pickedGPT-5.6 Sol |
| MCP AtlasPass ratetodaytoday | Nov 9todaytoday | | #387.2%best of the pickedClaude Fable 5.1 | #1481.8%GPT-5.6 |
| Vision2 | | | | |
|---|
| Vision ArenaArena ratingtodaytoday | Nov 9todaytoday | #511,247Step 5 Preview | #11,309best of the pickedClaude Fable 5 | #81,293GPT-6.1 Sol |
| Document ArenaArena ratingtodaytoday | Nov 9todaytoday | | #11,499best of the pickedClaude Fable 5 | #51,486GPT-5.6 Sol |
| Image2 | | | | |
|---|
| Image EditArena ratingtodaytoday | Nov 9todaytoday | #51996Step1x Edit | | #11,517best of the pickedGPT Image 2.5 Sunburst |
| Text-to-ImageArena ratingtodaytoday | Nov 9todaytoday | | | #11,429GPT Image 2.5 Sunburst |
| Video1 | | | | |
|---|
| Text-to-VideoArena ratingtodaytoday | Nov 9todaytoday | | | #131,367Sora 2 Pro |
| Speech2 | | | | |
|---|
| Speech ArenaArena ratingtodaytoday | Nov 9todaytoday | #181,216best of the pickedStepaudio 2.5 TTS | | #421,107TTS 1 Hd |
 Open ASRAverage WERtodaytoday | Nov 9todaytoday | | | #186.80 WERgpt-transcribe (openai) |
| Speed1 | | | | |
|---|
| AA SpeedOutput speedtodaytoday | Nov 9todaytoday | #2214 tok/sStep 5 Preview | #931 tok/sbest of the pickedClaude Sonnet 5.5 | #1522 tok/sGPT-6.1 Sol |
| Price1 | | | | |
|---|
| AA PriceBlended pricetodaytoday | Nov 9todaytoday | | #1$0.20best of the pickedClaude Haiku 5.5 | #6$2.00GPT-6.1 Terra |
| Usage1 | | | | |
|---|
 OpenRouterWeekly tokenstodaytoday | Nov 9todaytoday | #57.2T tokStep 5 Preview | #66.8T tokClaude Opus 5.5 | #47.2T tokbest of the pickedGPT-6 Luna |
Green marks the best placing among the picked where two or more are ranked; ties are marked for each. Ranks are each board's own order (lower is better), scores as the board published them. Dash: not on that board.
Modelsby Glyph