MiMo-V2.5-Pro vs GPT-5.2-Codex
API pricing, benchmark indices and specs — updated 19 October 2026.
XiaomiMiMo · A · Open weights
Params
1,023.2 B
Context
1,048,576
30d
13 K
mit · commercial OK
openai · B · API-only
Input / 1M
$1.75
Output / 1M
$14.00
AA index
28.5
proprietary · 400K context
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | MiMo-V2.5-Pro | GPT-5.2-Codex |
|---|---|---|
| Deployment | Open weights · also via API | API-only (closed weights) |
| Parameters | 1,023.2 B | n/a — API-only |
| Architecture | MiMoV2ForCausalLM | n/a — API-only |
| Context length | 1,048,576 | 400,000 |
| Licence | mit | Proprietary |
| Commercial use | Allowed | Per API terms |
| Languages | 2 | n/a — API-only |
| Downloads 30d | 13,381 | n/a — API-only |
| Downloads all time | 351 K | n/a — API-only |
| Quantizations on the Hub | SAFETENSORS | n/a — API-only |
| Gated | No | n/a — API-only |
| First seen on the Hub | 2026-04-27 | n/a — API-only |
| API input price / 1M tokens | $0.30 | $1.75 |
| API output price / 1M tokens | $0.61 | $14.00 |
| Est. cost per 1M input + 1M output tokens | $0.91 | $15.75 |
| Cached input / 1M tokens | $0.0028 | $0.18 |
| AA Intelligence Index | 26 | 28.5 |
| AA Coding Index | 60.2 | — |
| AA Agentic Index | 21.3 | — |
| Max output tokens | 945,000 | 128,000 |
| API providers | 3 | 1 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
MiMo-V2.5-Pro
$0.91
GPT-5.2-Codex
$15.75
MiMo-V2.5-Pro is 17.2× cheaper at list price.
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
MiMo-V2.5-Pro · fp16 @ 1024K ctx
20,782.3 GB / 24 GB