GPT-6 Astra vs Kimi K2.5
Head to head on 13 shared benchmarks, with price, context window, and release dates.
Benchmark scores
60evals · sort by any column, ⤢ to expand fullscreen
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| GPT-6 Astra OpenAI | 92.0% | 2164elo | 82.8 | 53.5% | 97.6% | 96.1% | 54.7% | 48.5% | 87.9% | 46.4% | 56.5% | 66.6% | 89.6% | 59.3% | - | 95.0% | 98.5% | 99.9% | 41.4% | 95.9% | 91.5% | - | 74.1% | 100.0% | 42.4% | 53.3% | 37.8% | 63.4% | - | - | - | - | 60.3% | - | - | - | - | - | - | - | - | - | - | 96.3% | 0.84 | 72.6% | - | 99.0% | 92.7% | 85.4% | 88.0% | - | - | - | - | 57.9% | - | 64.6% | - | - | 74.5% |
| Kimi K2.5 Moonshot AI | 37.0% | 1576elo | 74.9 | 35.8% | 27.9% | 87.9% | 30.7% | 39.3% | 76.4% | 49.9% | 49.0% | 26.3% | 17.5% | - | 96.1 | - | - | - | - | - | - | 68.3% | - | - | - | - | - | - | 95.4 | 70.2% | 78.5% | 10421 | - | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 62.0% | 87.1 | 66.5% | - | - | - | 63.3% | - | - | - | - | 73 | 67.3% | 70.8% | 74.2% | - | 34.8% | - | 69.4 | 95.9% | 59.9% |
2 / 2 models
| Attribute | GPT-6 Astra OpenAI | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | 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. | Kimi K2.5 is an AI model from Kimi. |
| Family | GPT | Kimi |
| Params | - | - |
| Open weights | closed | open |
| License | - | Modified MIT |
| Released | 3 Sep 2026 | 27 Jan 2026 |
| Context | 1,050,000 | 262,144 |
| Input $/1M | $10.00 | $0.60 |
| Output $/1M | $50.00 | $2.75 |
| Cache read $/1M | $1.000 | $0.070 |
| Cache write $/1M | $12.500 | - |
| Speed | 63 tok/s | 0 tok/s |
| Latency | 198.54 s | 0.00 s |
| Modalities | file, image, text | text, image |
| Providers | openai | - |
| Publisher | OpenAI | Moonshot AI |
| Reported scores | GPQA Diamond87.9% (AA) Humanity's Last Exam (HLE)30.7% (AA) IFBench70.2% (AA) SciCode49.0% (AA) τ²-bench (Tau²-bench)95.9% (AA) |
FAQ
- Is GPT-6 Astra or Kimi K2.5 better?
- Across the 13 benchmarks both models report on Sophon, GPT-6 Astra leads on 12 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do GPT-6 Astra and Kimi K2.5 compare on GPQA Diamond?
- GPT-6 Astra scores 96.1% and Kimi K2.5 scores 87.9% on GPQA Diamond.
- Which is cheaper, GPT-6 Astra or Kimi K2.5?
- Kimi K2.5 is cheaper at $2.75 per million output tokens against $50.00 for GPT-6 Astra - about 18.2x.
- When were GPT-6 Astra and Kimi K2.5 released?
- GPT-6 Astra was released 3 Sep 2026 by OpenAI. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.
Other head-to-heads
56Claude Opus 4.6 vs Kimi K2.531 shared evalsGemini 3.1 Pro Preview vs Kimi K2.530 shared evalsGPT-5.2 vs Kimi K2.529 shared evalsKimi K2.5 vs Qwen3.6 Plus29 shared evalsClaude Sonnet 4.5 vs Kimi K2.528 shared evalsGPT-5.5 vs Kimi K2.528 shared evalsClaude Opus 4.8 vs Kimi K2.528 shared evalsGPT-5.4 vs Kimi K2.528 shared evalsClaude Opus 4.7 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 shared evalsClaude Opus 4.5 vs Kimi K2.526 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsGLM 5.1 vs Kimi K2.526 shared evalsGPT-5 Mini vs Kimi K2.525 shared evalsDeepSeek V3.2 vs Kimi K2.525 shared evalsGPT-5.4 Mini vs Kimi K2.525 shared evalsGrok 4.1 Fast vs Kimi K2.524 shared evalsClaude 4 Sonnet vs Kimi K2.523 shared evalsGPT-5 Nano vs Kimi K2.522 shared evalsGemini 2.5 Pro vs Kimi K2.521 shared evalsGLM 4.7 vs Kimi K2.520 shared evalsGPT-5.5 vs GPT-6 Astra19 shared evalsClaude Opus 4.8 vs GPT-6 Astra19 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsGPT-5 vs Kimi K2.518 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsGemini 3.1 Pro Preview vs GPT-6 Astra16 shared evalsGPT-4o vs Kimi K2.515 shared evalsClaude Opus 4.7 vs GPT-6 Astra14 shared evalsGLM 5.1 vs GPT-6 Astra14 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 evalsClaude Sonnet 4.6 vs GPT-6 Astra13 shared evalsGPT-4.1 Mini vs Kimi K2.512 shared evalsGPT-5 Mini vs GPT-6 Astra12 shared evalsGPT-5 vs GPT-6 Astra12 shared evalsGPT-4.1 vs Kimi K2.512 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsGPT-4.1 Nano vs Kimi K2.512 shared evalsGPT-5.4 Mini vs GPT-6 Astra12 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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