Gemini 3.8 Flash vs Kimi K3
Gemini 3.8 Flash (Google DeepMind) and Kimi K3 (Moonshot) compared on benchmarks, pricing, context window, and use-case rankings.
- Gemini 3.8 Flash is cheaper on input tokens — $0.75 vs $2.55 per 1M.
- Kimi K3 ranks higher for coding (97th vs 87th percentile).
| Attribute | Gemini 3.8 Flash | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 158 |
| Coding | 87 | 97 |
| Math | 90 | 81 |
| Reasoning & Knowledge | 95 | 73 |
| Agentic & Tools | — | 80 |
| Specifications | ||
| Developer | Google DeepMind | Moonshot |
| Family | Gemini | Kimi |
| Released | Sep 2, 2026 | Jul 16, 2026 |
| Parameters | — | 2.8T |
| Availability | API access | Open weights (non-commercial) |
| Context window | 1M | 1M |
| Price — $/M input | $0.75 | $2.55 |
| Price — $/M output | $3.75 | $12.75 |
| Inputs | text, image, video, file, audio | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 99% | 97% |
| GPQA Diamond | 95% | 93% |
| Humanity's Last Exam | 48% | 47% |
| SciCode | 57% | 60% |
| SimpleQA Verified | 70% | 51% |
| WebDev Arena | 1567 | 1674 |
| APEX | — | 39% |
| ARC-AGI | — | 95% |
| ARC-AGI-2 | — | 60% |
| SimpleBench | — | 61% |
| WeirdML | — | 83% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
Frequently asked questions
Which is cheaper, Gemini 3.8 Flash or Kimi K3?
Gemini 3.8 Flash is cheaper on input tokens at $0.75 per million, versus $2.55 (representative OpenRouter pricing).
Which has a larger context window, Gemini 3.8 Flash or Kimi K3?
Gemini 3.8 Flash supports up to 1M tokens, compared with 1M for the other.
Which is better for coding, Gemini 3.8 Flash or Kimi K3?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Kimi K3 ranks higher — 97th vs 87th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.