Model comparison
Claude Haiku 5.5 vs MiMo-V2.5-Pro
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.2 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 4 categories and MiMo-V2.5-Pro in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 40.0.
- The biggest single-benchmark swing is NYT Connections (extended): 65.7% for Claude Haiku 5.5 and 34.4% for MiMo-V2.5-Pro.
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $0.43 / $0.87 for MiMo-V2.5-Pro.
- MiMo-V2.5-Pro accepts more context: 1.05M tokens versus 1M.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| Claude Haiku 5.5 | MiMo-V2.5-Pro | |
|---|---|---|
| Provider | Anthropic | Xiaomi |
| Noometry Index | 49.5 | 45.2 |
| Released | 2026-10-07 | 2026-04-22 |
| Weights | Proprietary | Open |
| Context window | 1M | 1.05M |
| Max output | 128K | 131K |
| Input $ / M tokens | $0.10 | $0.43 |
| Output $ / M tokens | $0.50 | $0.87 |
| Results tracked | 9 | 27 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), MiMo-V2.5-Pro: 47.4 (#60)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena WebDev | 1587 | 1479 |
| SciCode | — | 50.2% |
| LMArena Coding | — | 1503 |
| ALE-Bench | — | 899.8 |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), MiMo-V2.5-Pro: 26.8 (#130)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| NYT Connections (extended) | 65.7% | 34.4% |
| CritPt | — | 4% |
| LMArena Hard Prompts | — | 1488 |
| Mystery Game Puzzles | 30% | — |
| DTBench | — | 84.5% |
| LMCA | — | 29.5% |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), MiMo-V2.5-Pro: 40.0 (#96)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | — |
| FrontierMath Tier 4 | 46.3% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | — | 22% |
| LMArena Math | — | 1481 |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), MiMo-V2.5-Pro: 42.2 (#98)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| GPQA Diamond | 89.6% | — |
| SimpleQA Verified | 23.8% | — |
| LMArena Expert | — | 1503 |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), MiMo-V2.5-Pro: —
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, MiMo-V2.5-Pro: 55.1 (#34)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Non-English | — | 1449 |
| LMArena Chinese | — | 1507 |
| LMArena French | — | 1488 |
| LMArena German | — | 1458 |
| LMArena Japanese | — | 1412 |
| LMArena Korean | — | 1437 |
| LMArena Russian | — | 1450 |
| LMArena Spanish | — | 1471 |
Instruction Following Not comparable
Claude Haiku 5.5: —, MiMo-V2.5-Pro: 77.5 (#21)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Instruction Following | — | 1477 |
Long Context Not comparable
Claude Haiku 5.5: —, MiMo-V2.5-Pro: 45.4 (#37)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Longer Query | — | 1483 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, MiMo-V2.5-Pro: 65.3 (#49)
| Benchmark | Claude Haiku 5.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Text | — | 1465 |
| LMArena Creative Writing | — | 1440 |
| EQ-Bench Creative Writing | — | 1493 |
| EQ-Bench 4 | — | 1208 |
| LMArena Multi-Turn | — | 1477 |
Frequently asked questions
Is Claude Haiku 5.5 better than MiMo-V2.5-Pro?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 45.2 on the Noometry Index.
Which is cheaper, Claude Haiku 5.5 or MiMo-V2.5-Pro?
Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; MiMo-V2.5-Pro lists at $0.43 and $0.87.
Is Claude Haiku 5.5 or MiMo-V2.5-Pro better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 47.4 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5-Pro does, with 1.05M tokens against 1M.
How many benchmarks do Claude Haiku 5.5 and MiMo-V2.5-Pro share?
2 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and MiMo-V2.5-Pro has 27.