GPT-5.2-Codex vs Mimo v2 Pro
GPT-5.2-Codex 
Mimo v2 Pro Verdict
- GPT-5.2-Codex and Mimo v2 Pro are level on quality (60.8 vs 60.6).
- GPT-5.2-Codex is stronger in coding, instruction following, long context, multimodal.
- Mimo v2 Pro is stronger in agents & tools, composite, knowledge, human preference, reasoning.
- Mimo v2 Pro is 1.6× cheaper ($3.00 vs $4.81 per 1M blended).
| Metric | GPT-5.2-Codex | Mimo v2 Pro |
|---|---|---|
| BenchLeader Index | 60.8 | 60.6 |
| Agents & tools score | 63.5 | 69.4 |
| Coding score | 55.7 | 54.7 |
| Composite score | 56.8 | 65.2 |
| Instruction following score | 75.1 | 67.5 |
| Knowledge score | 63.1 | 66.3 |
| Long context score | 67.8 | 60.5 |
| Multimodal score | 60.7 | – |
| Human preference score | – | 64.5 |
| Reasoning score | – | 65.2 |
| Blended price $/M | $4.81 | $3.00 |
| Output speed | 25 tok/s | – |
| Time to first answer | 6.7 s | – |
| Context window | 400k | 1.0M |
| Terminal-Bench | 66.5% | – |
| APEX-Agents | 27.6% | – |
| LMArena Text | – | 1448 |
| LMArena Hard Prompts | – | 1476 |
| LMArena Coding | – | 1503 |
| LMArena WebDev | 1339 | 1433 |
| LiveBench | 74.0% | – |
| LiveBench Reasoning | 77.7% | – |
| LiveBench Coding | 83.6% | – |
| LiveBench Agentic Coding | 49.4% | – |
| LiveBench Mathematics | 88.8% | – |
| LiveBench Data Analysis | 78.2% | – |
| LiveBench Language | 73.7% | – |
| AA Intelligence Index | 28.5 | 28.6 |
| IFBench | 77.6% | 68.8% |
| AA-LCR | 82.3% | 68.3% |
| MMMU-Pro | 76.3% | – |
| AA-Omniscience | -2.2 | 4.6 |
| Terminal-Bench Hard | 37.1% | 40.9% |
| GPQA Diamond (AA) | 89.9% | 87.0% |
| Humanity's Last Exam (AA) | 35.7% | 30.4% |
| τ²-Bench Telecom (AA) | 92.1% | 95.0% |
| LiveCodeBench | 88.0% | – |
| SWE-Bench Pro | 41.0% | – |
| SWE-bench Verified (bash only) | 72.8% | – |
| SWE-bench Verified (any scaffold) | 72.8% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GPT-5.2-Codex vs Mimo v2 Pro: questions
- Is GPT-5.2-Codex better than Mimo v2 Pro?
- GPT-5.2-Codex and Mimo v2 Pro are level on quality (60.8 vs 60.6). The BenchLeader Index combines every independent quality benchmark; GPT-5.2-Codex is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is GPT-5.2-Codex better than Mimo v2 Pro for coding?
- GPT-5.2-Codex scores higher in coding (56 vs 55 on the category index, where 50 is average).
- Is GPT-5.2-Codex better than Mimo v2 Pro for agentic tasks?
- Mimo v2 Pro scores higher in agentic tasks (69 vs 64 on the category index, where 50 is average).
- Which is cheaper, GPT-5.2-Codex or Mimo v2 Pro?
- Mimo v2 Pro is cheaper: $3.00 against $4.81 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Mimo v2 Pro accepts more context: 1.0M against 400k tokens.