GPT-6.1 Sol vs GPT-6 Astra
GPT-6.1 Sol Verdict
- GPT-6.1 Sol (max) and GPT-6 Astra (max) are level on quality (69.3 vs 70.2).
- GPT-6.1 Sol (max) is stronger in human preference, long context, maths.
- GPT-6 Astra (max) is stronger in agents & tools, coding, composite, knowledge, multimodal, reasoning.
- GPT-6.1 Sol (max) is 5.0× cheaper ($4.00 vs $20.00 per 1M blended).
| Metric | GPT-6.1 Sol (max) | GPT-6 Astra (max) |
|---|---|---|
| BenchLeader Index | 69.3 | 70.2 |
| Agents & tools score | 63.9 | 68.8 |
| Coding score | 72.4 | 74.4 |
| Composite score | 79.0 | 80.3 |
| Human preference score | 68.1 | 67.0 |
| Knowledge score | 78.8 | 79.9 |
| Long context score | 66.8 | 65.6 |
| Maths score | 72.5 | 72.2 |
| Multimodal score | 66.2 | 66.3 |
| Reasoning score | 76.4 | 76.7 |
| Blended price $/M | $4.00 | $20.00 |
| Output speed | 56 tok/s | 47 tok/s |
| Time to first answer | 326.9 s | 383.6 s |
| Context window | 1.1M | 1.1M |
| GPQA Diamond | 95.4% | 95.8% |
| FrontierMath Tiers 1–3 | 93.7% | 93.7% |
| FrontierMath Tier 4 | 100.0% | 97.6% |
| OTIS Mock AIME | 100.0% | 100.0% |
| SimpleQA Verified | 73.9% | 75.6% |
| Terminal-Bench | 58.2% | 58.2% |
| SciCode | 54.2% | 56.5% |
| WeirdML | – | 93.3% |
| APEX-Agents | 60.0% | – |
| FrontierCode | – | 53.3% |
| LMArena Text | 1484 | 1475 |
| LMArena Hard Prompts | 1507 | 1500 |
| LMArena Coding | 1545 | 1542 |
| LMArena WebDev | 1755 | 1786 |
| LMArena Vision | 1288 | 1281 |
| LMArena Agent | 11.7 | 13.1 |
| LiveBench | 81.6% | 82.2% |
| LiveBench Reasoning | 92.6% | 92.7% |
| LiveBench Coding | 80.4% | 80.4% |
| LiveBench Agentic Coding | 54.5% | 57.3% |
| LiveBench Mathematics | 96.8% | 96.8% |
| LiveBench Data Analysis | 82.7% | 83.0% |
| LiveBench Language | 90.1% | 89.4% |
| LiveBench Instruction Following | 74.2% | 75.6% |
| AA Intelligence Index v4.3.2 | 51.8 | 52.7 |
| AA-LCR | 83.0% | 80.7% |
| MMMU-Pro | 86.0% | 86.9% |
| AA-Omniscience | 41.5 | 43.4 |
| GPQA Diamond (AA) | – | 96.1% |
| Humanity's Last Exam (AA) | 52.9% | 54.7% |
| SciCode (AA) | 54.2% | 56.5% |
| IOI | 96.9% | 100.0% |
| Terminal-Bench 2.1 (Vals) | – | 87.3% |
| Vals Index | 61.1 | 63.1 |
| ARC-AGI-1 | 96.5% | 97.5% |
| ARC-AGI-2 | 94.2% | 95.0% |
| ARC-AGI-3 | 96.2% | 98.6% |
| CritPt | 31.7% | 31.7% |
| GDPval-AA v2.1 | 53.8% | 52.1% |
| τ³-Banking (AA) | – | 41.4% |
| ITBench SRE (AA) | – | 48.6% |
| Analyst Agent (AA) | 50.0% | 51.3% |
| BioMysteryBench | 79.6% | 79.3% |
| Code Migration | 65.1% | 67.7% |
| CUA-bench | – | 19.2% |
| CyberBench | 39.3% | 41.1% |
| Excel Modeling Benchmark | 70.8% | 71.7% |
| Finance Agent v2 | 52.0% | 53.5% |
| Harvey's Legal Agent Benchmark | 5.4% | 5.4% |
| Legal Research Bench | 38.5% | 39.4% |
| MedCode | 48.8% | 48.5% |
| MedScribe | 86.5% | 87.9% |
| MysteryMechanism | 46.4% | 53.1% |
| ProgramBench | – | 5.5% |
| Public Benefits Bench | 59.3% | – |
| SAGE | 46.5% | 46.4% |
| SREBench | 50.8% | 56.9% |
| Tax Agent Bench | 62.3% | 63.3% |
| Terminal-Bench 4.0 (Vals) | 55.0% | 59.6% |
| Terminal-Bench Science | – | 62.9% |
| Time Horizon Index: KSP | – | 90.5% |
| Vibe Code Bench 1-100 | – | 27.6% |
| Vibe Code Bench v1.1 | 88.9% | 89.6% |
| LMArena Maths | 1488 | 1486 |
| LMArena Creative Writing | 1462 | 1448 |
| LMArena Instruction Following | 1488 | 1469 |
| LMArena Multi-turn | 1487 | 1484 |
| LMArena Longer Queries | 1496 | 1484 |
| LMArena Document | – | 1473 |
| Chess Puzzles | 61.0% | 72.0% |
| EBR-bench | 54.3% | 76.2% |
| Mystery Game Puzzles | 80.0% | 84.0% |
| BALROG | – | 68.3% |
| DeepSWE v1.1 | – | 73.2% |
| ALE-Bench | – | 2951.3 |
| GDP.pdf | – | 34.2% |
| FrontierSWE | – | 65.5% |
| Terminal-Bench 4.0 (AA) | 56.1% | 59.1% |
| Terminal-Bench 2.1 (AA) | – | 88.4% |
| AutomationBench | 64.9% | 68.5% |
| GDP.pdf | 31.0% | 31.0% |
| MLCR | 33.9% | 35.0% |
| Harvey LAB | 6.9% | 8.6% |
| AA-Omniscience: accuracy | 62.1% | 62.6% |
| AA-Omniscience: non-hallucination | 45.7% | 48.7% |
| AA-Briefcase v1.1 | 1557 | 1570 |
Data as of 2026-10-11. Best configuration of each model; every score links to its source on the model pages.
GPT-6.1 Sol vs GPT-6 Astra: questions
- Is GPT-6.1 Sol better than GPT-6 Astra?
- GPT-6.1 Sol (max) and GPT-6 Astra (max) are level on quality (69.3 vs 70.2). The BenchLeader Index combines every independent quality benchmark; GPT-6 Astra (max) is ahead overall as of 2026-10-11, but check the category scores for your use.
- Is GPT-6.1 Sol better than GPT-6 Astra for coding?
- GPT-6 Astra scores higher in coding (74 vs 72 on the category index, where 50 is average).
- Is GPT-6.1 Sol better than GPT-6 Astra for agentic tasks?
- GPT-6 Astra scores higher in agentic tasks (69 vs 64 on the category index, where 50 is average).
- Which is cheaper, GPT-6.1 Sol or GPT-6 Astra?
- GPT-6.1 Sol is cheaper: $4.00 against $20.00 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-6.1 Sol or GPT-6 Astra?
- GPT-6.1 Sol streams faster: 56 against 47 output tokens per second.
- Which has the larger context window?
- Both accept 1.1M tokens of context.