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DeepSeek V4 Flash price
Flash is the smaller DeepSeek V4. It is cheap. It is not the same thing as a :free model.
Updated 2026-09-27
DeepSeek V4 Flash is an efficiency MoE. The 0423 card says 284B total parameters and 13B active, with a 1,048,576-token window. The 0731 revision keeps that sparse shape, extends context to about 1.3 million tokens, and is described as a re-post-train aimed at coding, reasoning, and agents.
| Slug | Input / M | Output / M | Context |
|---|---|---|---|
| deepseek/deepseek-v4-flash (0423) | $0.047 | $0.094 | 1,048,576 |
| deepseek/deepseek-v4-flash-0731 | $0.021 | $0.32 | 1,310,720 |
Is there a free DeepSeek API
Not under these slugs. Both Flash prices are above zero. The catalog on 27 Sep 2026 also did not include deepseek-chat:free. If you need a $0 call, use openrouter/free or a slug that ends in :free, and expect a different model. Flash is the cheap paid route when you specifically want DeepSeek.
A million-token prompt plus a 100,000-token answer on 0731 is about $0.02 + $0.03. The same answer length on 0423 is about $0.05 + $0.01. Long completions favor 0423. Long prompts with a short answer favor 0731. Check which slug your client saved.
Questions
How much is DeepSeek V4 Flash?
On 27 Sep 2026, deepseek/deepseek-v4-flash was $0.047 input and $0.094 output per million tokens. deepseek/deepseek-v4-flash-0731 was $0.021 and $0.32.
Is the DeepSeek API free on OpenRouter?
The V4 Flash slugs are paid. A zero-dollar call uses openrouter/free or a :free model, which may not be DeepSeek.
How is Flash different from V4 Pro?
Flash activates about 13B parameters. Pro 0423 is described as 1.6T total and 49B active. Pro costs more and is the one aimed at harder coding and long agent runs.
Related
- DeepSeek API price
On 27 Sep 2026 OpenRouter listed DeepSeek V4 Pro 0423 at $0.348 / $0.696 per million tokens, and V4 Pro 0813 at $0.245 / $3.50.
- OpenRouter free models
openrouter/free routes to a $0 model at random. On 27 Sep 2026 the catalog also listed 17 slugs ending in :free, with rate limits.
- DeepSeek on OpenRouter
OpenRouter lists several DeepSeek slugs at once: V4 Pro, V4 Flash, older V3 chats, and R1 0528. The slug in your request picks the price.
- Coding models
Coding-model choice on OpenRouter is price, context, and tool-call reliability. DeepSeek V4, Qwen3.7 Max, GLM 5.2, and Sonnet 5 are the slugs to price first.