Model comparison
Gemini 4 Argon vs Kimi K2 (Jul 2025)
Gemini 4 Argon is the stronger model overall, scoring 56.5 to 41.2 on the Noometry Index.
Last verified . 13 shared benchmarks.
GoogleSummary
- They share 13 benchmarks with published results for both. Gemini 4 Argon scores higher in 9 categories and Kimi K2 (Jul 2025) in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 4 Argon leads 73.9 to 42.7.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.
Side by side
| Gemini 4 Argon | Kimi K2 (Jul 2025) | |
|---|---|---|
| Provider | Moonshot AI | |
| Noometry Index | 56.5 | 41.2 |
| Released | 2026-09-30 | 2025-07-12 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 262K |
| Input $ / M tokens | — | $0.57 |
| Output $ / M tokens | — | $2.30 |
| Results tracked | 21 | 42 |
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Category by category
Coding Gemini 4 Argon leads
Gemini 4 Argon: 62.0 (#9), Kimi K2 (Jul 2025): 42.4 (#102)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Coding | 1550 | 1399 |
| SWE-bench Verified (bash only) | — | 63.4% |
| Aider Polyglot | — | 59.1% |
| LMArena WebDev | 1678 | — |
| FrontierSWE | 55% | — |
| SciCode | 61.8% | — |
| GSO | — | 4.9% |
| WeirdML | — | 42.8% |
| ALE-Bench | — | 597.5 |
Agentic & Tool Use Gemini 4 Argon leads
Gemini 4 Argon: 49.2 (#8), Kimi K2 (Jul 2025): 32.4 (#64)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| Terminal-Bench | — | 35.7% |
| APEX-Agents | 82.2% | — |
| Berkeley Function Calling Leaderboard | — | 59.1% |
| METR Time Horizons | — | 59.2% |
| Vending-Bench 2 | 13,718 | — |
Reasoning Gemini 4 Argon leads
Gemini 4 Argon: 44.2 (#47), Kimi K2 (Jul 2025): 23.3 (#179)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Hard Prompts | 1548 | 1384 |
| SimpleBench | — | 26.3% |
| Kagi LLM Benchmark | — | 64.4% |
| CritPt | 27.1% | — |
| Epoch Capabilities Index | — | 146.01 |
| ForecastBench | — | 60.2 |
Math Gemini 4 Argon leads
Gemini 4 Argon: 73.9 (#17), Kimi K2 (Jul 2025): 42.7 (#83)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Math | 1536 | 1397 |
| ProofBench | 99% | — |
| Omni-MATH | — | 65.4% |
| FrontierMath (Feb 2025 set) | — | 21.4% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Gemini 4 Argon leads
Gemini 4 Argon: 43.9 (#89), Kimi K2 (Jul 2025): 37.3 (#157)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Expert | 1553 | 1365 |
| MMLU-Pro | — | 81.9% |
| Confabulations | — | 20.4% |
| Vectara Hallucination Rate | — | 17.9% |
| GPQA (HELM) | — | 65.3% |
Multimodal Not comparable
Gemini 4 Argon: 46.5 (#14), Kimi K2 (Jul 2025): —
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| Blueprint-Bench 2 | 54.4% | — |
Multilingual Gemini 4 Argon leads
Gemini 4 Argon: 60.3 (#1), Kimi K2 (Jul 2025): 49.6 (#130)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Non-English | 1523 | 1372 |
| LMArena Chinese | 1610 | 1415 |
| LMArena Russian | 1537 | 1385 |
| LMArena Spanish | 1497 | 1386 |
| LMArena French | — | 1379 |
| LMArena German | — | 1387 |
| LMArena Japanese | — | 1349 |
| LMArena Korean | — | 1325 |
Instruction Following Gemini 4 Argon leads
Gemini 4 Argon: 80.1 (#2), Kimi K2 (Jul 2025): 71.1 (#156)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Instruction Following | 1538 | 1348 |
| IFEval | — | 85% |
Long Context Gemini 4 Argon leads
Gemini 4 Argon: 47.6 (#15), Kimi K2 (Jul 2025): 41.2 (#145)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Longer Query | 1549 | 1353 |
| Fiction.LiveBench | — | 66.7% |
| CL-bench | — | 17.6% |
Writing & Preference Gemini 4 Argon leads
Gemini 4 Argon: 71.4 (#19), Kimi K2 (Jul 2025): 62.3 (#78)
| Benchmark | Gemini 4 Argon | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Text | 1534 | 1380 |
| LMArena Creative Writing | 1531 | 1350 |
| LMArena Multi-Turn | 1557 | 1371 |
| Short-Story Creative Writing | — | 85.6% |
| EQ-Bench Creative Writing | — | 1666 |
| WildBench | — | 86.2% |
Frequently asked questions
Is Gemini 4 Argon better than Kimi K2 (Jul 2025)?
Gemini 4 Argon is the stronger model overall, scoring 56.5 to 41.2 on the Noometry Index.
Is Gemini 4 Argon or Kimi K2 (Jul 2025) better for coding?
Gemini 4 Argon scores higher on coding benchmarks: 62.0 versus 42.4 in the Noometry coding category.
How many benchmarks do Gemini 4 Argon and Kimi K2 (Jul 2025) share?
13 benchmarks have published results for both models. Gemini 4 Argon has 21 scored results on Noometry and Kimi K2 (Jul 2025) has 42.