MiniMax M2 vs GPT-5.1-Codex
MiniMax M2 is cheaper on output tokens, while GPT-5.1-Codex offers a larger context window. Choose MiniMax M2 or GPT-5.1-Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | MiniMax M2 | GPT-5.1-Codex |
|---|---|---|
| Provider | MiniMax | OpenAI |
| Input / 1M tokens | $0.26 | $1.25 |
| Output / 1M tokens | $1.02 | $10.00 |
| Context window | 205K | 400K |
| Parameters | 229B | — |
| Open weights | Yes | No |
| Released | Oct 2025 | Nov 2025 |
| SWE-bench Verified score | 61.0 | 66.0 |
| LMArena (Chatbot Arena) Elo score | 1340 | — |
| LMArena WebDev Elo score | 1297 | 1337 |
| LiveBench score | — | 69.3 |
FAQ
Is MiniMax M2 or GPT-5.1-Codex cheaper?
MiniMax M2 is cheaper on output tokens ($1.02 vs $10.00 per 1M).
Which has the larger context window, MiniMax M2 or GPT-5.1-Codex?
GPT-5.1-Codex 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.