OpenAIReasoning modelGPT-6 Astra
GPT-6 Astra is an OpenAI proprietary reasoning model, released 2 Sept 2026. Its best configuration (max reasoning effort) ranks #1 of 751 on the BenchLeader Index at 70.2 ±2.9, in the top ten. The ± is the point: 40 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in composite (80) and lowest in long context (66). At $20.00 per million tokens blended it is among the most expensive ranked models. Output speed of 54 tokens per second puts it slower than most, with a first answer in 341.9 s. It has been measured at 7 reasoning-effort settings; this summary describes the best-scoring one, and the tabs above switch between them. Last measured 2 Oct 2026.
- Blended price
- $20.00/M
- $10.00 in · $50.00 out
- Output speed
- 54 tok/s
- measured by Artificial Analysis
- First answer
- 342 s
- first token 3.70 s
- Context
- 1.1M
- Full answer
- 351 s
- median, reasoning included
- Cost per run
- $3.26
- one full Intelligence Index run
- Released
- 2 Sept 2026
- Overall index70
- Reasoning77
- Coding75
- Agents & tools68
- Maths73
- Knowledge80
- Human preference67
- Multimodal66
- Long context66
- Composite80
Reasoning-effort configurations
The same model behaves differently depending on how much it is allowed to think. Each row is one setting, scored only on the benchmarks that were run at that setting. “Not stated” collects results from publishers that did not say which setting they used; for a reasoning model that is usually its thinking mode, but we do not assume it. Pick a setting here or at the top of the page to see its price, speed and category scores.
| Effort | Index | Rank | Speed | First answer | Chat reply cost | Categories |
|---|---|---|---|---|---|---|
| no reasoning | 59.2 | #124 | 31 tok/s | 3.70 s | $0.019 | Coding 60 · Maths 69 · Reasoning 65 |
| low | 66.2 | #35 | 46 tok/s | 2.82 s | $0.019 | Agents & tools 58 · Coding 61 · Composite 82 · Knowledge 80 · Long context 65 · Maths 72 · Multimodal 68 · Reasoning 76 |
| medium | 67.9 | #19 | 45 tok/s | 6.07 s | $0.019 | Agents & tools 61 · Coding 61 · Composite 86 · Knowledge 81 · Long context 65 · Maths 76 · Multimodal 68 · Reasoning 79 |
| high | 69.9 | #5 | 45 tok/s | 58 s | $0.019 | Agents & tools 65 · Coding 71 · Composite 88 · Knowledge 82 · Long context 65 · Maths 76 · Multimodal 70 · Reasoning 79 |
| xhigh | 69.3 | #12 | 49 tok/s | 181 s | $0.019 | Agents & tools 67 · Coding 63 · Composite 90 · Knowledge 81 · Long context 65 · Maths 76 · Multimodal 70 · Reasoning 81 |
| maxbest | 70.2 | #1 | 54 tok/s | 342 s | $0.019 | Agents & tools 68 · Coding 75 · Composite 80 · Human preference 67 · Knowledge 80 · Long context 66 · Maths 73 · Multimodal 66 · Reasoning 77 |
| not stated | 66.4 | #30 | 31 tok/s | 3.70 s | $0.019 | Agents & tools 74 · Knowledge 58 · Maths 80 · Reasoning 87 |
What more thinking costs
Turning the effort up buys index points and multiplies the bill. Here max costs 4.0× low for +4.0 on the index — 2.0 points per doubling of spend. Compare that with other models.
How its index has moved
8 Sept 2026 to 3 Oct 2026- max
- high
- xhigh
- medium
The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.
Benchmark results
One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Reasoning
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| GPQA Diamond | – | – | – | – | – | 95.8%#1 | – | Epoch AI Benchmarking Hub | |
| Humanity's Last Exam | – | – | – | – | – | – | 54.8%#1 | Scale AI / CAIS | |
| LMArena Hard Prompts | – | – | – | – | – | 1502#30 | – | LMArena | |
| LiveBench Reasoningnot in index | – | – | – | – | – | 92.7%#1 | – | LiveBench | |
| GPQA Diamond (AA)not in index | – | 93.1%#24 | 93.9%#10 | 95.0%#4 | 96.3%#1 | 96.1%#2 | – | Artificial Analysis | |
| Humanity's Last Exam (AA)not in index | – | 49.2%#27 | 52.7%#19 | 53.1%#16 | 54.6%#13 | 54.7%#12 | – | Artificial Analysis | |
| ARC-AGI-1 | 86.0%#89 | 96.5%#21 | 97.5%#10 | 98.5%#1 | 98.5%#1 | 97.5%#10 | – | ARC Prize | |
| ARC-AGI-2 | 59.6%#78 | 85.4%#26 | 92.1%#7 | 92.1%#7 | 93.3%#3 | 95.0%#1 | – | ARC Prize | |
| ARC-AGI-3 | 96.7%#6 | 98.0%#5 | 98.4%#3 | 99.9%#1 | 98.4%#3 | 98.6%#2 | – | ARC Prize | |
| CritPt | – | 26.3%#36 | 29.1%#19 | 28.9%#22 | 31.4%#7 | 31.7%#2 | – | Artificial Analysis | |
| MysteryMechanismnot in index | – | – | – | – | – | 53.1%#1 | – | Vals AI | |
| Chess Puzzlesnot in index | – | – | – | – | – | 72.0%#1 | – | Epoch AI Benchmarking Hub | |
| Mystery Game Puzzlesnot in index | – | – | – | – | – | 84.0%#1 | – | Epoch AI Benchmarking Hub | |
| LMCAnot in index | – | 62.2%#16 | 62.9%#13 | 63.8%#9 | 64.4%#7 | – | 64.1%#8 | Epoch AI Benchmarking Hub | |
| DTBenchnot in index | – | 94.9%#33 | 97.1%#12 | 96.5%#17 | 97.3%#8 | – | 97.1%#12 | Epoch AI Benchmarking Hub | |
| BTF-3not in index | – | 13.5%#9 | – | – | – | – | – | Epoch AI Benchmarking Hub |
Coding
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| SciCode | 53.5%#59 | 54.0%#52 | 54.2%#50 | 55.4%#37 | 55.7%#34 | 56.5%#25 | – | SciCode | |
| WeirdML | – | – | – | 92.9%#4 | – | 93.3%#2 | – | WeirdML | |
| FrontierCode | – | – | – | – | – | 53.3%#4 | – | Cognition | |
| LMArena Coding | – | – | – | – | – | 1543#7 | – | LMArena | |
| LMArena WebDev | – | – | – | – | – | 1788#2 | – | LMArena | |
| LiveBench Codingnot in index | – | – | – | – | – | 80.4%#19 | – | LiveBench | |
| SciCode (AA)not in index | – | 54.0%#62 | 54.2%#60 | 55.4%#46 | 55.7%#42 | 56.5%#33 | – | Artificial Analysis | |
| IOI | – | – | – | – | – | 100.0%#1 | – | Vals AI | |
| Code Migrationnot in index | – | – | – | – | – | 67.7%#3 | – | Vals AI | |
| ProgramBenchnot in index | – | – | – | – | – | 5.5%#3 | – | Vals AI | |
| Vibe Code Bench 1-100not in index | – | – | – | – | – | 27.6%#4 | – | Vals AI | |
| Vibe Code Bench v1.1not in index | – | – | – | – | – | 89.6%#6 | – | Vals AI | |
| SWE Atlas: Codebase QnAnot in index | – | – | – | – | 59.1%#3 | – | – | Scale AI SEAL | |
| SWE Atlas: Refactoringnot in index | – | – | – | – | 59.0%#1 | – | – | Scale AI SEAL | |
| SWE Atlas: Test Writingnot in index | – | – | – | – | 50.7%#5 | – | – | Scale AI SEAL | |
| MirrorCodenot in index | – | – | – | 46.7%#4 | – | – | – | Epoch AI Benchmarking Hub | |
| DeepSWEnot in index | – | 67.0%#22 | 72.8%#8 | 73.2%#4 | 74.1%#1 | 73.2%#4 | – | Epoch AI Benchmarking Hub | |
| ALE-Benchnot in index | – | – | – | – | – | 2951.3#1 | – | Epoch AI Benchmarking Hub | |
| FrontierSWEnot in index | – | – | – | – | – | 65.5%#1 | – | Epoch AI Benchmarking Hub | |
| Terminal-Bench 4.0 (AA)not in index | – | 41.9%#26 | 49.5%#17 | 54.0%#11 | 59.6%#2 | 59.1%#5 | – | Artificial Analysis | |
| Terminal-Bench 2.1 (AA)not in index | – | 88.0%#12 | 89.5%#5 | 89.9%#3 | 89.1%#7 | 88.4%#10 | – | Artificial Analysis |
Agents & tools
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| Terminal-Bench | – | 50.6%#29 | 54.2%#23 | 57.9%#16 | 57.9%#16 | 58.2%#15 | – | Terminal-Bench | |
| Remote Labor Index | – | – | – | – | – | – | 20.8%#1 | Scale AI / CAIS | |
| APEX-Agents | – | – | – | – | – | – | 64.7%#7 | Mercor | |
| LMArena Agent | – | – | – | – | – | 12.3#4 | – | LMArena | |
| LiveBench Agentic Codingnot in index | – | – | – | – | – | 57.3%#20 | – | LiveBench | |
| Terminal-Bench 2.1 (Vals) | – | – | – | – | – | 87.3%#2 | – | Vals AI | |
| GDPval (AA)not in index | – | 43.3%#71 | 48.4%#48 | 49.2%#44 | 50.8%#40 | 52.1%#36 | – | Artificial Analysis | |
| τ²-Bench Banking (AA) | – | 32.0%#59 | 35.5%#45 | 40.0%#30 | 43.1%#21 | 41.4%#26 | – | Artificial Analysis | |
| ITBench SRE (AA)not in index | – | – | – | – | – | 48.6%#8 | – | Artificial Analysis | |
| Analyst Agent (AA)not in index | – | – | – | – | – | 51.3%#6 | – | Artificial Analysis | |
| CUA-benchnot in index | – | – | – | – | – | 19.2%#1 | – | Vals AI | |
| CyberBenchnot in index | – | – | – | – | – | 41.1%#38 | – | Vals AI | |
| Finance Agent v2not in index | – | – | – | – | – | 53.5%#27 | – | Vals AI | |
| Harvey's Legal Agent Benchmarknot in index | – | – | – | – | – | 5.4%#28 | – | Vals AI | |
| Legal Research Benchnot in index | – | – | – | – | – | 39.4%#25 | – | Vals AI | |
| SREBenchnot in index | – | – | – | – | – | 56.9%#1 | – | Vals AI | |
| Tax Agent Benchnot in index | – | – | – | – | – | 63.3%#23 | – | Vals AI | |
| Terminal-Bench 4.0 (Vals)not in index | – | – | – | – | – | 59.6%#3 | – | Vals AI | |
| Terminal-Bench Sciencenot in index | – | – | – | – | – | 62.9%#1 | – | Vals AI | |
| Time Horizon Index: KSPnot in index | – | – | – | – | – | 90.5%#1 | – | Vals AI | |
| BALROGnot in index | – | – | – | – | – | 68.3%#1 | – | BALROG | |
| Vending-Bench 2not in index | – | – | – | – | – | – | 15514.7#1 | Andon Labs | |
| AutomationBenchnot in index | – | – | 64.6%#15 | 66.6%#9 | 67.2%#6 | 68.5%#5 | – | Artificial Analysis | |
| GDP.pdfnot in index | – | – | 30.4%#7 | 31.0%#4 | 32.2%#1 | 31.0%#4 | – | Artificial Analysis | |
| AA-Briefcasenot in index | – | – | 1459#30 | 1507#23 | 1544#18 | 1569#14 | – | Artificial Analysis | |
| FACTS Searchnot in index | – | – | – | – | – | – | 89.9%#1 |
Maths
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| FrontierMath Tiers 1–3 | – | – | – | – | – | 93.7%#1 | – | Epoch AI Benchmarking Hub | |
| FrontierMath Tier 4 | 82.9%#11 | 87.8%#9 | 97.6%#5 | 97.6%#2 | 97.6%#2 | 97.6%#2 | – | Epoch AI Benchmarking Hub | |
| OTIS Mock AIME | – | – | – | – | – | 100.0%#1 | – | Epoch AI Benchmarking Hub | |
| ProofBench | – | – | – | – | – | – | 99.0%#4 | Vals AI | |
| LiveBench Mathematicsnot in index | – | – | – | – | – | 96.8%#4 | – | LiveBench | |
| LMArena Maths | – | – | – | – | – | 1490#27 | – | LMArena |
Knowledge
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| SimpleQA Verified | – | – | – | – | – | 75.6%#1 | – | Epoch AI Benchmarking Hub | |
| LiveBench Data Analysisnot in index | – | – | – | – | – | 83.0%#1 | – | LiveBench | |
| AA-Omniscience | – | 40.5#16 | 42.2#10 | 43.7#2 | 43.4#4 | 43.4#5 | – | Artificial Analysis | |
| PRBench Finance | – | – | – | – | – | – | 47.5%#14 | Scale AI SEAL | |
| PRBench Legal | – | – | – | – | – | – | 48.4%#14 | Scale AI SEAL | |
| BioMysteryBenchnot in index | – | – | – | – | – | 79.3%#3 | – | Vals AI | |
| Excel Modeling Benchmarknot in index | – | – | – | – | – | 71.7%#9 | – | Vals AI | |
| MedCodenot in index | – | – | – | – | – | 48.5%#27 | – | Vals AI | |
| MedScribenot in index | – | – | – | – | – | 87.9%#14 | – | Vals AI | |
| DrugDiscoveryBenchnot in index | – | – | – | – | – | 68.7%#1 | – | Scale AI SEAL | |
| EBR-benchnot in index | – | – | – | – | – | 76.2%#1 | – | Epoch AI Benchmarking Hub | |
| AA-Omniscience: accuracynot in index | – | 59.5%#21 | 60.6%#18 | 61.1%#14 | 61.9%#13 | 62.6%#11 | – | Artificial Analysis | |
| AA-Omniscience: non-hallucinationnot in index | – | 53.1%#91 | 53.5%#90 | 55.2%#85 | 51.7%#94 | 48.7%#110 | – | Artificial Analysis |
Instruction following
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| LiveBench Languagenot in index | – | – | – | – | – | 89.4%#4 | – | LiveBench | |
| LiveBench Instruction Followingnot in index | – | – | – | – | – | 75.6%#8 | – | LiveBench | |
| LMArena Instruction Followingnot in index | – | – | – | – | – | 1474#30 | – | LMArena |
Human preference
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| LMArena Text | – | – | – | – | – | 1477#29 | – | LMArena | |
| LMArena Creative Writingnot in index | – | – | – | – | – | 1449#39 | – | LMArena | |
| LMArena Multi-turnnot in index | – | – | – | – | – | 1488#23 | – | LMArena | |
| LMArena Longer Queriesnot in index | – | – | – | – | – | 1487#32 | – | LMArena |
Multimodal
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| LMArena Vision | – | – | – | – | – | 1280#34 | – | LMArena | |
| MMMU-Pro | – | 84.6%#18 | 85.1%#11 | 86.4%#4 | 86.2%#5 | 86.9%#2 | – | Artificial Analysis | |
| SAGEnot in index | – | – | – | – | – | 46.4%#36 | – | Vals AI | |
| Blueprint-Bench 2not in index | – | – | – | – | – | – | 49.7%#1 | Epoch AI Benchmarking Hub |
Long context
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| AA-LCR | – | 80.0%#70 | 79.7%#80 | 80.0%#70 | 80.0%#70 | 80.7%#58 | – | Artificial Analysis | |
| LMArena Documentnot in index | – | – | – | – | – | 1473#17 | – | LMArena | |
| MLCRnot in index | – | – | – | – | – | 35.0%#13 | – | Artificial Analysis |
Composite
| Benchmark | no reasoning | low | medium | high | xhigh | max | not stated | Source | Trend |
|---|---|---|---|---|---|---|---|---|---|
| Epoch Capabilities Indexnot in index | – | – | – | – | – | – | 166.5#2 | Epoch AI Benchmarking Hub | |
| LiveBench | – | – | – | – | – | 82.2%#4 | – | LiveBench | |
| AA Intelligence Index | – | 45.8#32 | 49.6#20 | 50.9#15 | 52.4#9 | 52.7#7 | – | Artificial Analysis | |
| Vals Indexnot in index | – | – | – | – | – | 63.1#6 | – | Vals AI |
Where it wins
Benchmarks where this configuration ranks in the top five of every configuration measured.
- #1GPQA Diamond95.8% · of 285
- #1FrontierMath Tiers 1–393.7% · of 111
- #1OTIS Mock AIME100.0% · of 266
- #1SimpleQA Verified75.6% · of 81
- #1IOI100.0% · of 36
- #1ARC-AGI-295.0% · of 220
- #2FrontierMath Tier 497.6% · of 67
- #2WeirdML93.3% · of 157
- #2LMArena WebDev1788 · of 128
- #2MMMU-Pro86.9% · of 275
- #2Terminal-Bench 2.1 (Vals)87.3% · of 73
- #2ARC-AGI-398.6% · of 53
- #2CritPt31.7% · of 529
- #4FrontierCode53.3% · of 40
- #4LMArena Agent12.3 · of 47
- #4LiveBench82.2% · of 63
- #5AA-Omniscience43.4 · of 526
Where to run it
Every provider serving this model through OpenRouter, with throughput and first-token latency measured on live traffic over the last 30 minutes and each provider’s own price. Purple marks the best in each column.
| Provider | Speed | First token | Input $/M | Output $/M | Context | Quantisation |
|---|---|---|---|---|---|---|
| OpenAI | 59 tok/s | 2.33 s | $5.00 | $25.00 | 1.1M | – |
| OpenAI | 46 tok/s | 4.40 s | $20.00 | $100.00 | 1.1M | – |
| OpenAI | 41 tok/s | 3.45 s | $10.00 | $50.00 | 1.1M | – |
| Azure | 33 tok/s | 1.88 s | $10.00 | $50.00 | 1.1M | – |
| Azure | 29 tok/s | 50 s | $11.00 | $55.00 | 1.1M | – |
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache at $1.00 per 1M. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.019 | $0.016 | 5.8 min |
| Summarise a 30-page report | 12,000 / 600 | $0.150 | $0.069 | 5.9 min |
| Code edit | 6,000 / 1,500 | $0.135 | $0.095 | 6.2 min |
| Agentic coding session | 60,000 / 4,000 | $0.800 | $0.395 | 6.9 min |
| Structured extraction | 2,000 / 200 | $0.030 | $0.017 | 5.8 min |
See also
Data as of 4 Oct 2026. Compare these configurations.
Cite as: BenchLeader, “GPT-6 Astra: benchmarks, pricing, speed and rank”, https://www.benchleader.com/models/gpt-6-astra, data as of 4 Oct 2026.