Model comparison
Gemini 1.5 Flash 8B vs Kimi K2 (Jul 2025)
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 29.9 on the Noometry Index.
Last verified . 17 shared benchmarks.
GoogleSummary
- They share 17 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and Kimi K2 (Jul 2025) in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2 (Jul 2025) leads 42.7 to 14.2.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.
Side by side
| Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) | |
|---|---|---|
| Provider | Moonshot AI | |
| Noometry Index | 29.9 | 41.2 |
| Released | 2024-10-03 | 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 Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 35.5 (#225), Kimi K2 (Jul 2025): 42.4 (#102)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Coding | 1218 | 1399 |
| 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
Gemini 1.5 Flash 8B: —, Kimi K2 (Jul 2025): 32.4 (#64)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| Terminal-Bench | — | 35.7% |
| Berkeley Function Calling Leaderboard | — | 59.1% |
| METR Time Horizons | — | 59.2% |
Reasoning Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 20.0 (#244), Kimi K2 (Jul 2025): 23.3 (#179)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1384 |
| SimpleBench | — | 26.3% |
| Kagi LLM Benchmark | — | 64.4% |
| DTBench | 50% | — |
| Epoch Capabilities Index | — | 146.01 |
| ForecastBench | — | 60.2 |
Math Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 14.2 (#302), Kimi K2 (Jul 2025): 42.7 (#83)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Math | 1207 | 1397 |
| OTIS Mock AIME 2024-2025 | 4.6% | — |
| Omni-MATH | — | 65.4% |
| FrontierMath (Feb 2025 set) | — | 21.4% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 16.0 (#289), Kimi K2 (Jul 2025): 37.3 (#157)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Expert | 1185 | 1365 |
| GPQA Diamond | 33% | — |
| MMLU-Pro | — | 81.9% |
| Confabulations | — | 20.4% |
| Vectara Hallucination Rate | — | 17.9% |
| GPQA (HELM) | — | 65.3% |
Multimodal Not comparable
Gemini 1.5 Flash 8B: 28.2 (#115), Kimi K2 (Jul 2025): —
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Vision | 1044 | — |
Multilingual Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 38.5 (#229), Kimi K2 (Jul 2025): 49.6 (#130)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Non-English | 1215 | 1372 |
| LMArena Chinese | 1231 | 1415 |
| LMArena French | 1234 | 1379 |
| LMArena German | 1206 | 1387 |
| LMArena Japanese | 1150 | 1349 |
| LMArena Korean | 1140 | 1325 |
| LMArena Russian | 1236 | 1385 |
| LMArena Spanish | 1212 | 1386 |
Instruction Following Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 62.8 (#236), Kimi K2 (Jul 2025): 71.1 (#156)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Instruction Following | 1199 | 1348 |
| IFEval | — | 85% |
Long Context Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 37.0 (#225), Kimi K2 (Jul 2025): 41.2 (#145)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Longer Query | 1219 | 1353 |
| Fiction.LiveBench | — | 66.7% |
| CL-bench | — | 17.6% |
Writing & Preference Kimi K2 (Jul 2025) leads
Gemini 1.5 Flash 8B: 42.8 (#232), Kimi K2 (Jul 2025): 62.3 (#78)
| Benchmark | Gemini 1.5 Flash 8B | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Text | 1226 | 1380 |
| LMArena Creative Writing | 1218 | 1350 |
| LMArena Multi-Turn | 1185 | 1371 |
| Short-Story Creative Writing | — | 85.6% |
| EQ-Bench Creative Writing | — | 1666 |
| WildBench | — | 86.2% |
Frequently asked questions
Is Gemini 1.5 Flash 8B better than Kimi K2 (Jul 2025)?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 29.9 on the Noometry Index.
Is Gemini 1.5 Flash 8B or Kimi K2 (Jul 2025) better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 42.4 versus 35.5 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Flash 8B and Kimi K2 (Jul 2025) share?
17 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Kimi K2 (Jul 2025) has 42.