Up to four models
GPT-6 Astra vs Claude Fable 5.1
On the index (GPT-4 = 100), GPT-6 Astra scores 199 and Claude Fable 5.1 192. Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.
GPT-6 Astra
199182–215
WeightsClosed
ReleasedSep 2026
Price in / out$10 / $50
Context1.05M
Core tests taken7 of 9
Claude Fable 5.1
192175–208
WeightsClosed
ReleasedSep 2026
Price in / out$10 / $50
Context1M
Core tests taken6 of 9
GPT-6 Astra leads Claude Fable 5.1 by 7 points, ahead on 4 of 6 shared core tests, at a similar price.
Test by testthird-party results
GPT-6 AstraClaude Fable 5.1
Every result as a table
| Test | GPT-6 Astra | Claude Fable 5.1 |
|---|---|---|
| Reasoning & knowledge | ||
| Humanity's Last Exam | 54.8% | 46.5% |
| LiveBench Data Analysis | 83.0% | 80.3% |
| LiveBench IF | 75.6% | 73.0% |
| LiveBench Language | 89.4% | 89.5% |
| LiveBench Reasoning | 92.7% | 91.7% |
| EBR-bench | 76.2% | 57.1% |
| SimpleQA Verified | 75.6% | 70.8% |
| Maths | ||
| FrontierMath (tiers 1-3) | 93.7% | 90.2% |
| AIME-style maths (OTIS mock) | 100.0% | 100.0% |
| LiveBench Mathematics | 96.8% | 97.0% |
| ProofBench v1.1 | 99.0% | 100.0% |
| Chess puzzles | 74.0% | 48.0% |
| FrontierMath (tier 4) | 97.6% | 87.8% |
| Coding | ||
| Terminal-Bench 4.0 | 59.6% | 58.1% |
| LiveBench Agentic Coding | 57.3% | 66.1% |
| LiveBench Coding | 80.4% | 86.4% |
| Code Migration | 67.7% | 54.6% |
| CyberBench v1.1 | 41.1% | 70.4% |
| IOI | 100.0% | 90.8% |
| ProgramBench | 5.5% | 7.0% |
| Vibe Code Bench 1-100 | 27.6% | 28.0% |
| Vibe Code Bench v1.1 | 89.6% | 90.3% |
| FrontierSWE | 65.5% | 56.3% |
| GSO-Bench | 79.4% | 88.2% |
| WeirdML | 93.3% | 92.9% |
| Agents | ||
| APEX-Agents | 64.7% | 68.6% |
| SRE Bench | 56.9% | 22.9% |
| Terminal-Bench-Science | 62.9% | 40.0% |
| DTBench | 97.3% | 97.6% |
| Furniture assembly | 80.0% | 70.0% |
| LMCA | 64.4% | 65.5% |
| Mystery game puzzles | 84.0% | 58.0% |
| Professional work | ||
| Finance Agent (v2) | 53.5% | 58.9% |
| EMB | 71.7% | 76.7% |
| Legal Research Bench | 39.4% | 55.3% |
| MedCode | 48.5% | 53.5% |
| MedScribe | 87.9% | 91.3% |
| SAGE | 46.4% | 48.5% |
| Tax Agent Bench | 20.7% | 49.2% |
| Novel problems | ||
| ARC-AGI-2 | 95.0% | 90.0% |
| ARC-AGI-1 | 98.5% | 97.5% |
| MysteryMechanism | 53.1% | 47.8% |
Tests at least two of these models have taken. Bold rows are the core tests.
