Model comparison
Kimi K2 (Jul 2025) vs Olmo 3.1 32b Instruct
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 39.4 on the Noometry Index.
Last verified . 16 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 16 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 7 categories and Olmo 3.1 32b Instruct in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Kimi K2 (Jul 2025) leads 62.3 to 50.2.
Side by side
| Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct | |
|---|---|---|
| Provider | Moonshot AI | Allen Institute for AI (Ai2) |
| Noometry Index | 41.2 | 39.4 |
| Released | 2025-07-12 | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.57 | — |
| Output $ / M tokens | $2.30 | — |
| Results tracked | 42 | 16 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 42.4 (#102), Olmo 3.1 32b Instruct: 39.5 (#157)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Coding | 1399 | 1347 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Not comparable
Kimi K2 (Jul 2025): 32.4 (#64), Olmo 3.1 32b Instruct: —
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |
Reasoning Olmo 3.1 32b Instruct leads
Kimi K2 (Jul 2025): 23.3 (#179), Olmo 3.1 32b Instruct: 26.4 (#132)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1384 | 1322 |
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| Epoch Capabilities Index | 146.01 | — |
| ForecastBench | 60.2 | — |
Math Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 42.7 (#83), Olmo 3.1 32b Instruct: 36.3 (#167)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Math | 1397 | 1305 |
| Omni-MATH | 65.4% | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 37.3 (#157), Olmo 3.1 32b Instruct: 36.1 (#175)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Expert | 1365 | 1308 |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |
Multilingual Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 49.6 (#130), Olmo 3.1 32b Instruct: 42.6 (#191)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Non-English | 1372 | 1275 |
| LMArena Chinese | 1415 | 1304 |
| LMArena French | 1379 | 1328 |
| LMArena German | 1387 | 1282 |
| LMArena Korean | 1325 | 1206 |
| LMArena Russian | 1385 | 1268 |
| LMArena Spanish | 1386 | 1336 |
| LMArena Japanese | 1349 | — |
Instruction Following Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 71.1 (#156), Olmo 3.1 32b Instruct: 68.6 (#187)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Instruction Following | 1348 | 1299 |
| IFEval | 85% | — |
Long Context Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 41.2 (#145), Olmo 3.1 32b Instruct: 39.9 (#166)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Longer Query | 1353 | 1312 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
Writing & Preference Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 62.3 (#78), Olmo 3.1 32b Instruct: 50.2 (#185)
| Benchmark | Kimi K2 (Jul 2025) | Olmo 3.1 32b Instruct |
|---|---|---|
| LMArena Text | 1380 | 1311 |
| LMArena Creative Writing | 1350 | 1264 |
| LMArena Multi-Turn | 1371 | 1309 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Olmo 3.1 32b Instruct?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 39.4 on the Noometry Index.
Is Kimi K2 (Jul 2025) or Olmo 3.1 32b Instruct better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 42.4 versus 39.5 in the Noometry coding category.
How many benchmarks do Kimi K2 (Jul 2025) and Olmo 3.1 32b Instruct share?
16 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Olmo 3.1 32b Instruct has 16.