Kimi K2 Thinking Turbo vs GPT-5
Kimi K2 Thinking Turbo is cheaper on output tokens, while GPT-5 offers a larger context window. Choose Kimi K2 Thinking Turbo or GPT-5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Kimi K2 Thinking Turbo | GPT-5 |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Input / 1M tokens | $1.15 | $1.25 |
| Output / 1M tokens | $8.00 | $10.00 |
| Context window | 262K | 400K |
| Parameters | — | — |
| Open weights | Yes | No |
| Released | Nov 2025 | Aug 2025 |
| GPQA Diamond score | 84.2 | 86.2 |
| LMArena (Chatbot Arena) Elo score | 1414 | 1406 |
| LMArena WebDev Elo score | 1322 | 1417 |
| FrontierMath score | — | 32.4 |
| Aider Polyglot score | — | 88.0 |
| SWE-bench Verified score | — | 75.6 |
| Epoch Capabilities Index score | — | 150 |
| LMArena Vision Elo score | — | 1208 |
FAQ
Is Kimi K2 Thinking Turbo or GPT-5 cheaper?
Kimi K2 Thinking Turbo is cheaper on output tokens ($8.00 vs $10.00 per 1M).
Which has the larger context window, Kimi K2 Thinking Turbo or GPT-5?
GPT-5 has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.