GPQA Diamond
Diamond / Independent evaluation ↗- Kimi K2 Thinking:
- GPT-6 Astra:
Compare models
Find the right model, side by side.
Updated: Data as of:
First model
Second model
Model specifications
| Specifications |  Kimi K2 ThinkingMoonshot AI |  GPT-6 AstraOpenAI |
|---|---|---|
| Provider | Not reported | |
| Context sizetokens | 256,000 | 1,000,000 |
| Cutoff date | Not reported | 2026-04-30 |
| Input costUSD / 1M tokens | Not reported | $10.00 |
| Output costUSD / 1M tokens | Not reported | $50.00 |
| Max outputtokens | Not reported | 128,000 |
| LatencyTTFT · seconds | Not reported | 365.127 |
| Speedtokens / sec | Not reported | 70.564 |
Benchmark performance
2 shared benchmark comparisons. Versions and setups matched.
Kimi K2 ThinkingGPT-6 Astra
Humanity’s Last Exam
Stable HLE — text-only subset ↗No tools- Kimi K2 Thinking:
- GPT-6 Astra:
