OpenAI: GPT-5.1-Codex vs MiniMax: MiniMax M2.1
openai vs minimax
On price, MiniMax: MiniMax M2.1 is cheaper (blended cost is about 0.15× that of OpenAI: GPT-5.1-Codex).
On capability, OpenAI: GPT-5.1-Codex has the higher intelligence index (24) — better for complex reasoning.
Verdict: pick MiniMax: MiniMax M2.1 on a budget, or OpenAI: GPT-5.1-Codex for output quality. Full details below.
Side-by-Side Specs
| Metric | OpenAI: GPT-5.1-Codex | MiniMax: MiniMax M2.1 |
|---|---|---|
| Input /1M | $1.25 | $0.30 |
| Output /1M | $10.00 | $1.20 |
| Blended (3:1) | $3.44 | $0.53 |
| Context | 400K | 205K |
| Intelligence | 24 | 21 |
| Coding | 37 | 33 |
| Math | 96 | 83 |
| Speed | 125 tok/s | 45 tok/s |
| CPS Grade | A | A |
FAQ
Which is cheaper, OpenAI: GPT-5.1-Codex or MiniMax: MiniMax M2.1?
On price, MiniMax: MiniMax M2.1 is cheaper (blended cost is about 0.15× that of OpenAI: GPT-5.1-Codex). OpenAI: GPT-5.1-Codex: $1.25 in / $10 out; MiniMax: MiniMax M2.1: $0.3 in / $1.2 out (per 1M tokens).
Which is smarter, OpenAI: GPT-5.1-Codex or MiniMax: MiniMax M2.1?
On capability, OpenAI: GPT-5.1-Codex has the higher intelligence index (24) — better for complex reasoning. Coding index: OpenAI: GPT-5.1-Codex 37 vs MiniMax: MiniMax M2.1 33.
Which one should I choose?
Verdict: pick MiniMax: MiniMax M2.1 on a budget, or OpenAI: GPT-5.1-Codex for output quality. Full details below.