Kimi K2.6 vs GPT-5 Pro
Kimi K2.6 is cheaper on output tokens, while GPT-5 Pro offers a larger context window. Choose Kimi K2.6 or GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Kimi K2.6 | GPT-5 Pro |
|---|---|---|
| Provider | MoonshotAI | OpenAI |
| Input / 1M tokens | $0.65 | $15.00 |
| Output / 1M tokens | $3.41 | $120.00 |
| Context window | 262K | 400K |
| Parameters | 1T | — |
| Open weights | Yes | No |
| Released | Apr 2026 | Oct 2025 |
| LiveBench score | 72.4 | 71.3 |
| LMArena (Chatbot Arena) Elo score | 1455 | — |
| LMArena WebDev Elo score | 1509 | — |
| LMArena Vision Elo score | 1282 | — |
| GPQA Diamond score | 90.8 | — |
| FrontierMath score | 39.0 | — |
| Epoch Capabilities Index score | 151 | 151 |
FAQ
Is Kimi K2.6 or GPT-5 Pro cheaper?
Kimi K2.6 is cheaper on output tokens ($3.41 vs $120.00 per 1M).
Which has the larger context window, Kimi K2.6 or GPT-5 Pro?
GPT-5 Pro 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.