MiniMax-M2.5 vs GPT-5.1-Codex
API pricing, benchmark indices and specs — updated 19 October 2026.
openai · B · API-only
Input / 1M
$1.25
Output / 1M
$10.00
AA index
23.7
proprietary · 400K context
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | MiniMax-M2.5 | GPT-5.1-Codex |
|---|---|---|
| Deployment | Open weights · also via API | API-only (closed weights) |
| Parameters | 228.7 B | n/a — API-only |
| Architecture | MiniMaxM2ForCausalLM | n/a — API-only |
| Context length | 196,608 | 400,000 |
| Licence | other | Proprietary |
| Commercial use | Unknown | Per API terms |
| Languages | — | n/a — API-only |
| Downloads 30d | 893,342 | n/a — API-only |
| Downloads all time | 5.8 M | n/a — API-only |
| Quantizations on the Hub | SAFETENSORS | n/a — API-only |
| Gated | No | n/a — API-only |
| First seen on the Hub | 2026-02-12 | n/a — API-only |
| API input price / 1M tokens | $0.27 | $1.25 |
| API output price / 1M tokens | $0.95 | $10.00 |
| Est. cost per 1M input + 1M output tokens | $1.22 | $11.25 |
| Cached input / 1M tokens | $0.03 | $0.13 |
| AA Intelligence Index | 22.8 | 23.7 |
| AA Coding Index | — | — |
| AA Agentic Index | — | — |
| Max output tokens | 32,768 | 128,000 |
| API providers | 7 | 1 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
MiniMax-M2.5
$1.22
GPT-5.1-Codex
$11.25
MiniMax-M2.5 is 9.2× cheaper at list price.
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
MiniMax-M2.5 · fp16 @ 192K ctx
1,077.0 GB / 24 GB