Gemini 3.8 Flash vs Kimi K3
How Google AI's Gemini 3.8 Flash and Moonshot (Kimi)'s Kimi K3 differ on paper, from the specs each provider publishes.
Compare them on your promptBoth answer side by side, free with your own API keys.
Key differences
- Both models accept 1.05M tokens of context.
- Kimi K3 can write longer replies, up to 128K output tokens against 66K.
- Gemini 3.8 Flash is the newer release (September 2026); Kimi K3 came out in June 2026.
- Kimi K3 lists extended thinking support that Gemini 3.8 Flash does not.
Side by side
| Spec | Gemini 3.8 Flash | Kimi K3 |
|---|---|---|
| Provider | Google AI | Moonshot (Kimi) |
| Released | September 2026 | June 2026 |
| Context window | 1.05M tokens | 1.05M tokens |
| Max output | 66K tokens | 128K tokens |
| Reasoning model | Yes | Yes |
| Price per 1M tokens (in / out) | See provider | See provider |
| Capabilities | Image input, Reasoning, Coding, Tool calling, Structured output, Streaming | Image input, Reasoning, Coding, Tool calling, Structured output, Extended thinking, Streaming |
Specs as published by each provider. Benchmarks and output quality aren't covered here; the best test is your own prompts.
Specs only go so far. Ask both.
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