Model comparison
GPT-5.6 Terra vs MiMo-V2.6-Pro
GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 50.3 on the Noometry Index. MiMo-V2.6-Pro costs 8.3× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.
Last verified . 19 shared benchmarks.
Summary
- They share 19 benchmarks with published results for both. GPT-5.6 Terra scores higher in 7 categories and MiMo-V2.6-Pro in 3 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.6 Terra leads 81.6 to 54.5.
- The biggest single-benchmark swing is SciCode: 55% for GPT-5.6 Terra and 60.9% for MiMo-V2.6-Pro.
- MiMo-V2.6-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $2 / $12 for GPT-5.6 Terra.
- GPT-5.6 Terra accepts more context: 1.05M tokens versus 1.05M.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| GPT-5.6 Terra | MiMo-V2.6-Pro | |
|---|---|---|
| Provider | OpenAI | Xiaomi |
| Noometry Index | 59.2 | 50.3 |
| Released | 2026-07-09 | 2026-09-21 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 1.05M |
| Max output | 128K | 131K |
| Input $ / M tokens | $2 | $0.43 |
| Output $ / M tokens | $12 | $0.87 |
| Results tracked | 52 | 19 |
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Category by category
Coding GPT-5.6 Terra leads
GPT-5.6 Terra: 57.7 (#19), MiMo-V2.6-Pro: 55.5 (#23)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1522 | 1629 |
| SciCode | 55% | 60.9% |
| LMArena Coding | 1484 | 1534 |
| ALE-Bench | 1,951 | 1,158 |
| DeepSWE | 69.6% | — |
| FrontierCode | 41.3% | — |
| CursorBench | 41.3% | — |
| WeirdML | 78.3% | — |
Agentic & Tool Use GPT-5.6 Terra leads
GPT-5.6 Terra: 40.1 (#25), MiMo-V2.6-Pro: 37.5 (#35)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| APEX-Agents | 58.2% | 59.5% |
| BALROG | 53.2% | — |
| GDP.pdf | 24.7% | — |
| Vending-Bench 2 | 7,343 | — |
Reasoning GPT-5.6 Terra leads
GPT-5.6 Terra: 60.7 (#21), MiMo-V2.6-Pro: 43.1 (#50)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| CritPt | 30% | 26.6% |
| LMArena Hard Prompts | 1468 | 1512 |
| ARC-AGI-2 | 83.9% | — |
| SimpleBench | 48.9% | — |
| Kagi LLM Benchmark | 51.3% | — |
| NYT Connections (extended) | 78.4% | — |
| ARC-AGI-1 | 96.5% | — |
| Chess Puzzles | 54% | — |
| Mystery Game Puzzles | 35% | — |
| DTBench | 93.3% | — |
| LMCA | 55% | — |
| Surface Evolver Bench | 83.8% | — |
| Epoch Capabilities Index | 159.62 | — |
Math GPT-5.6 Terra leads
GPT-5.6 Terra: 81.6 (#12), MiMo-V2.6-Pro: 54.5 (#45)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| ProofBench | 74% | 70% |
| LMArena Math | 1466 | 1494 |
| FrontierMath (Tiers 1-3) | 86% | — |
| FrontierMath Tier 4 | 70.7% | — |
| OTIS Mock AIME 2024-2025 | 99.7% | — |
Knowledge GPT-5.6 Terra leads
GPT-5.6 Terra: 61.2 (#30), MiMo-V2.6-Pro: 43.5 (#92)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Expert | 1492 | 1543 |
| GPQA Diamond | 93.3% | — |
| SimpleQA Verified | 43.2% | — |
Multimodal GPT-5.6 Terra leads
GPT-5.6 Terra: 47.3 (#11), MiMo-V2.6-Pro: 40.8 (#43)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | 1271 | 1264 |
| Blueprint-Bench 2 | 30.8% | — |
| Furniture Assembly | 54.2% | — |
| LMArena Document | 1472 | — |
Multilingual MiMo-V2.6-Pro leads
GPT-5.6 Terra: 54.4 (#44), MiMo-V2.6-Pro: 56.9 (#14)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | 1439 | 1474 |
| LMArena Chinese | 1513 | 1529 |
| LMArena Russian | 1450 | 1480 |
| LMArena French | 1471 | — |
| LMArena German | 1460 | — |
| LMArena Japanese | 1457 | — |
| LMArena Korean | 1425 | — |
| LMArena Spanish | 1448 | — |
Instruction Following MiMo-V2.6-Pro leads
GPT-5.6 Terra: 76.4 (#40), MiMo-V2.6-Pro: 78.2 (#12)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | 1454 | 1493 |
Long Context MiMo-V2.6-Pro leads
GPT-5.6 Terra: 44.4 (#68), MiMo-V2.6-Pro: 46.0 (#27)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | 1451 | 1501 |
Writing & Preference GPT-5.6 Terra leads
GPT-5.6 Terra: 70.2 (#23), MiMo-V2.6-Pro: 66.8 (#33)
| Benchmark | GPT-5.6 Terra | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | 1447 | 1492 |
| LMArena Creative Writing | 1410 | 1468 |
| LMArena Multi-Turn | 1449 | 1464 |
| EQ-Bench Creative Writing | 1855 | — |
| EQ-Bench 4 | 1234 | — |
Frequently asked questions
Is GPT-5.6 Terra better than MiMo-V2.6-Pro?
GPT-5.6 Terra is the stronger model overall, scoring 59.2 to 50.3 on the Noometry Index. MiMo-V2.6-Pro costs 8.3× less per token, which makes it the better buy when GPT-5.6 Terra's lead doesn't matter for your workload.
Which is cheaper, GPT-5.6 Terra or MiMo-V2.6-Pro?
MiMo-V2.6-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; GPT-5.6 Terra lists at $2 and $12.
Is GPT-5.6 Terra or MiMo-V2.6-Pro better for coding?
GPT-5.6 Terra scores higher on coding benchmarks: 57.7 versus 55.5 in the Noometry coding category.
Which has the bigger context window?
GPT-5.6 Terra does, with 1.05M tokens against 1.05M.
How many benchmarks do GPT-5.6 Terra and MiMo-V2.6-Pro share?
19 benchmarks have published results for both models. GPT-5.6 Terra has 52 scored results on Noometry and MiMo-V2.6-Pro has 19.