Claude Opus 4.5 Muse Spark 1.1 GPT-6 Astra Head to head on 12 boards: GPT-6 Astra places best on 8 , Muse Spark 1.1 places best on 4 and Claude Opus 4.5 places best on 0 . All 3 ranked on 5 of 19 boards.
Board Read Claude Opus 4.5 Muse Spark 1.1 GPT-6 Astra Chat2 Text Arena Arena rating today today Nov 9 today today #36 1,474 #13 1,490 best of the picked #31 1,475 MultiChallenge Score today today Nov 9 today today #18 59.0% #4 75.3% best of the picked Reasoning7 Epoch ECI ECI today today Nov 9 today today #55 151.8 #42 154.9 #1 169.1 best of the picked LiveBench Global average today today Nov 9 today today #46 72.6% #35 75.3% #4 82.2% best of the picked HLE Accuracy today today Nov 9 today today #16 25.2% #1 54.8% best of the picked ARC-AGI-2 Score today today Nov 9 today today #45 37.6% #1 95.0% best of the picked GPQA Diamond Accuracy today today Nov 9 today today #72 86.0% #2 95.8% best of the picked AA Intelligence Index today today Nov 9 today today #3 56.9 MMLU-Pro Accuracy · stale today today Nov 9 today today #12 87.3% Coding3 WebDev Arena Arena rating today today Nov 9 today today #59 1,494 #44 1,542 #3 1,770 best of the picked SWE-bench Verified Resolved · stale today today Nov 9 today today #1 76.8% SWE-Bench Pro Resolved today today Nov 9 today today #4 90.2% Agents and tools3 MCP Atlas Pass rate today today Nov 9 today today #25 69.8% #2 88.1% best of the picked Search Arena Arena rating today today Nov 9 today today #29 1,186 #3 1,245 best of the picked BFCL Overall accuracy · stale today today Nov 9 today today #1 77.5% Vision2 Document Arena Arena rating today today Nov 9 today today #18 1,468 #9 1,479 best of the picked #11 1,477 Vision Arena Arena rating today today Nov 9 today today #24 1,279 #17 1,285 best of the picked Speed1 AA Speed Output speed today today Nov 9 today today #16 21 tok/s Price1 AA Price Blended price today today Nov 9 today today #17 $20.0
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.