DeepSeek V4 Flash vs Kimi K3
How DeepSeek's DeepSeek V4 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
- Kimi K3 accepts a larger context window: 1.05M tokens versus 1M for DeepSeek V4 Flash.
- DeepSeek V4 Flash can write longer replies, up to 384K output tokens against 128K.
- DeepSeek V4 Flash is the newer release (July 2026); Kimi K3 came out in June 2026.
- Kimi K3 lists image input support that DeepSeek V4 Flash does not.
Side by side
| Spec | DeepSeek V4 Flash | Kimi K3 |
|---|---|---|
| Provider | DeepSeek | Moonshot (Kimi) |
| Released | July 2026 | June 2026 |
| Context window | 1M tokens | 1.05M tokens |
| Max output | 384K tokens | 128K tokens |
| Reasoning model | Yes | Yes |
| Price per 1M tokens (in / out) | See provider | See provider |
| Capabilities | Reasoning, Coding, Tool calling, Structured output, Extended thinking, 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.
Send one message and get DeepSeek V4 Flash and Kimi K3's answers side by side, with response time, tokens and cost for each. You'll need DeepSeek and Moonshot (Kimi) keys.
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