Gemini 3 Flash vs Kimi K3
Gemini 3 Flash 
Kimi K3 Verdict
- Kimi K3 leads on quality: 66.5 vs 61.6.
- Gemini 3 Flash (thinking) is stronger in instruction following, knowledge.
- Kimi K3 is stronger in composite, long context, multimodal, coding, human preference, maths.
- Gemini 3 Flash (thinking) is 5.3× cheaper ($1.13 vs $6.00 per 1M blended).
- Gemini 3 Flash (thinking) streams 4.8× faster (180 vs 38 tokens per second).
| Metric | Gemini 3 Flash (thinking) | Kimi K3 |
|---|---|---|
| BenchLeader Index | 61.6 | 66.5 |
| Agents & tools score | 67.4 | 67.4 |
| Composite score | 62.3 | 74.2 |
| Instruction following score | 75.4 | – |
| Knowledge score | 69.0 | 68.2 |
| Long context score | 65.5 | 71.1 |
| Multimodal score | 64.4 | 65.0 |
| Coding score | – | 65.0 |
| Human preference score | – | 71.2 |
| Maths score | – | 78.1 |
| Blended price $/M | $1.13 | $6.00 |
| Output speed | 180 tok/s | 38 tok/s |
| Time to first answer | 6.1 s | 56.3 s |
| Context window | 1M | 1.0M |
| SciCode | – | 58.7% |
| APEX-Agents | – | 39.3% |
| FrontierCode | – | 44.2% |
| ProofBench | – | 87.0% |
| Epoch Capabilities Index | – | 157.6 |
| LiveBench | – | 79.2% |
| LiveBench Reasoning | – | 90.7% |
| LiveBench Coding | – | 81.5% |
| LiveBench Agentic Coding | – | 62.2% |
| LiveBench Mathematics | – | 84.4% |
| LiveBench Data Analysis | – | 78.7% |
| LiveBench Language | – | 85.5% |
| AA Intelligence Index | 26.3 | 43.8 |
| IFBench | 78.0% | – |
| AA-LCR | 78.0% | 88.7% |
| MMMU-Pro | 79.9% | 80.5% |
| AA-Omniscience | 10.1 | 19.7 |
| Terminal-Bench Hard | 38.6% | – |
| GPQA Diamond (AA) | 89.8% | 93.5% |
| Humanity's Last Exam (AA) | 36.6% | 46.9% |
| SciCode (AA) | – | 59.5% |
| τ²-Bench Telecom (AA) | 80.4% | – |
| LegalBench | – | 86.0% |
| CorpFin | – | 71.6% |
| TaxEval | – | 75.7% |
| Terminal-Bench 2.1 (Vals) | – | 80.9% |
| SWE-bench (Vals) | – | 93.4% |
| GPQA Diamond (Vals) | – | 92.9% |
| Vals Index | – | 57.8 |
| EQ-Bench 4 | – | 1339 |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Gemini 3 Flash vs Kimi K3: questions
- Is Gemini 3 Flash better than Kimi K3?
- Kimi K3 leads on quality: 66.5 vs 61.6. The BenchLeader Index combines every independent quality benchmark; Kimi K3 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Gemini 3 Flash better than Kimi K3 for agentic tasks?
- They are level in agentic tasks (67 each).
- Which is cheaper, Gemini 3 Flash or Kimi K3?
- Gemini 3 Flash is cheaper: $1.13 against $6.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Gemini 3 Flash or Kimi K3?
- Gemini 3 Flash streams faster: 180 against 38 output tokens per second.
- Which has the larger context window?
- Kimi K3 accepts more context: 1.0M against 1M tokens.