Claude Sonnet 4.6 vs GPT-6 Astra
Head to head on 13 shared benchmarks, with price, context window, and release dates.
Benchmark scores
58evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-6 Astra OpenAI | 41.4% | 92.0% | 2164elo | 82.8 | 53.5% | 97.6% | 96.1% | 54.7% | 99.0% | 46.4% | 56.5% | 66.6% | 89.6% | 59.3% | - | - | 95.0% | 98.5% | 99.9% | 95.9% | 91.5% | - | - | 74.1% | - | 100.0% | 42.4% | 53.3% | 37.8% | 63.4% | - | - | 60.3% | - | - | - | - | - | - | - | 48.5% | 87.9% | - | - | 96.3% | 0.84 | 72.6% | - | 92.7% | 85.4% | 88.0% | - | 57.9% | - | 64.6% | - | - | - | 74.5% |
| Claude Sonnet 4.6 Anthropic | 47.6% | 76.0% | 1804elo | 79.9 | 51.0% | 32.4% | 87.5% | 33.6% | 45.0% | 46.6% | 46.8% | 50.6% | 51.5% | - | 87.1% | 47.2% | - | - | - | - | - | 1.35 | 65.3% | - | 1207elo | - | - | - | - | - | 56.6% | 92.2% | - | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | - | - | 89.3 | 67.7% | - | - | - | 72.1% | - | - | - | 77.1% | - | 53.0% | - | 76.3 | 60.6% | 75.7% | 64.6% |
2 / 2 models
| Attribute | Claude Sonnet 4.6 Anthropic | GPT-6 Astra OpenAI |
|---|---|---|
| Description | Claude Sonnet 4.6 is an AI model from Anthropic. | OpenAI's GPT-6 flagship, launched as its best computer-use model: it drives browsers, spreadsheets and desktop applications rather than answering questions about them. Built on OpenAI's largest training run to date and the first model it designates Critical for cybersecurity capability. Rolling out from Daybreak enterprise access to ChatGPT and the API; Pro, Business and Enterprise plans also get a GPT-6 Astra Pro tier. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | - |
| Released | 17 Feb 2026 | 3 Sep 2026 |
| Context | 1,000,000 | 1,050,000 |
| Input $/1M | $3.00 | $10.00 |
| Output $/1M | $15.00 | $50.00 |
| Cache read $/1M | $0.300 | $1.000 |
| Cache write $/1M | $3.750 | $12.500 |
| Speed | 0 tok/s | 63 tok/s |
| Latency | 0.00 s | 198.54 s |
| Modalities | text, image, file | file, image, text |
| Providers | - | openai |
| Publisher | Anthropic | OpenAI |
| Reported scores | GPQA Diamond87.5% (AA) Humanity's Last Exam (HLE)33.6% (AA) IFBench56.6% (AA) SciCode46.8% (AA) τ²-bench (Tau²-bench)75.7% (AA) |
FAQ
- Is Claude Sonnet 4.6 or GPT-6 Astra better?
- Across the 13 benchmarks both models report on Sophon, GPT-6 Astra leads on 11 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.6 and GPT-6 Astra compare on GPQA Diamond?
- Claude Sonnet 4.6 scores 87.5% and GPT-6 Astra scores 96.1% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.6 or GPT-6 Astra?
- Claude Sonnet 4.6 is cheaper at $15.00 per million output tokens against $50.00 for GPT-6 Astra - about 3.3x.
- When were Claude Sonnet 4.6 and GPT-6 Astra released?
- Claude Sonnet 4.6 was released 17 Feb 2026 by Anthropic. GPT-6 Astra was released 3 Sep 2026 by OpenAI.
Other head-to-heads
56Claude Sonnet 4.6 vs Gemini 3.1 Pro Preview32 shared evalsClaude Sonnet 4.6 vs GPT-5.530 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.629 shared evalsClaude Opus 4.7 vs Claude Sonnet 4.629 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Sonnet 4.6 vs GPT-5.428 shared evalsClaude Sonnet 4.6 vs GPT-5.4 Mini28 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 shared evalsClaude Sonnet 4.6 vs Qwen3.6 Plus26 shared evalsClaude Sonnet 4.6 vs GLM 5.125 shared evalsClaude Sonnet 4.5 vs Claude Sonnet 4.624 shared evalsClaude Sonnet 4.6 vs GPT-5.224 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude Sonnet 4.6 vs DeepSeek V3.223 shared evalsClaude Sonnet 4.6 vs Grok 4.1 Fast22 shared evalsClaude Sonnet 4.6 vs GPT-5 Nano20 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.620 shared evalsGPT-5.5 vs GPT-6 Astra19 shared evalsClaude Opus 4.8 vs GPT-6 Astra19 shared evalsClaude Sonnet 4.6 vs Gemini 2.5 Pro19 shared evalsClaude Sonnet 4.6 vs GLM 4.719 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs GPT-516 shared evalsGemini 3.1 Pro Preview vs GPT-6 Astra16 shared evalsClaude Opus 4.7 vs GPT-6 Astra14 shared evalsGLM 5.1 vs GPT-6 Astra14 shared evalsClaude Sonnet 4.6 vs GPT-4o14 shared evalsGPT-5.2 vs GPT-6 Astra13 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsGPT-5.4 vs GPT-6 Astra13 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Mini12 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsGPT-5 vs GPT-6 Astra12 shared evalsClaude Sonnet 4.6 vs GPT-4.112 shared evalsGPT-5.4 Mini vs GPT-6 Astra12 shared evalsClaude Sonnet 4.6 vs GPT-4o-mini12 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Nano12 shared evalsClaude Sonnet 4.5 vs GPT-6 Astra11 shared evalsClaude Opus 4.5 vs GPT-6 Astra11 shared evalsGPT-6 Astra vs Qwen3.6 Plus11 shared evalsGPT-5 Nano vs GPT-6 Astra10 shared evalsGemini 2.5 Pro vs GPT-6 Astra10 shared evalsGPT-6 Astra vs Grok 4.1 Fast10 shared evalsDeepSeek V3.2 vs GPT-6 Astra9 shared evalsGLM 4.7 vs GPT-6 Astra9 shared evalsClaude 4 Sonnet vs GPT-6 Astra8 shared evalsGPT-4.1 Mini vs GPT-6 Astra6 shared evalsGPT-4.1 Nano vs GPT-6 Astra6 shared evalsGPT-6 Astra vs gpt-oss-120b6 shared evalsGPT-4.1 vs GPT-6 Astra5 shared evalsGPT-4o-mini vs GPT-6 Astra4 shared evalsGPT-4o vs GPT-6 Astra4 shared evals
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