DeepSeek V4.1 Flash vs Kimi K3
DeepSeek V4.1 Flash (DeepSeek) and Kimi K3 (Moonshot) compared on benchmarks, pricing, context window, and use-case rankings.
- DeepSeek V4.1 Flash is cheaper on input tokens — $0.30 vs $2.55 per 1M.
- Kimi K3 ranks higher for coding (97th vs 74th percentile).
| Attribute | DeepSeek V4.1 Flash | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 158 |
| Coding | 74 | 97 |
| Math | — | 81 |
| Reasoning & Knowledge | 75 | 73 |
| Agentic & Tools | — | 80 |
| Specifications | ||
| Developer | DeepSeek | Moonshot |
| Family | DeepSeek | Kimi |
| Released | Sep 10, 2026 | Jul 16, 2026 |
| Parameters | — | 2.8T |
| Availability | — | Open weights (non-commercial) |
| Context window | 1M | 1M |
| Price — $/M input | $0.30 | $2.55 |
| Price — $/M output | $1.20 | $12.75 |
| Inputs | text, image | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| Humanity's Last Exam | 39% | 47% |
| SciCode | 52% | 60% |
| AIME 2024/2025 | — | 97% |
| APEX | — | 39% |
| ARC-AGI | — | 95% |
| ARC-AGI-2 | — | 60% |
| GPQA Diamond | — | 93% |
| SimpleBench | — | 61% |
| SimpleQA Verified | — | 51% |
| WebDev Arena | — | 1674 |
| 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, DeepSeek V4.1 Flash or Kimi K3?
DeepSeek V4.1 Flash is cheaper on input tokens at $0.30 per million, versus $2.55 (representative OpenRouter pricing).
Which has a larger context window, DeepSeek V4.1 Flash or Kimi K3?
DeepSeek V4.1 Flash supports up to 1M tokens, compared with 1M for the other.
Which is better for coding, DeepSeek V4.1 Flash or Kimi K3?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Kimi K3 ranks higher — 97th vs 74th 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.