DeepSeek V4 Flash
deepseek/
DeepSeek model · Served by DeepInfra · live on the gateway · :free available
Pricing
About DeepSeek V4 Flash
Fast DeepSeek V4 lane for economical reasoning, coding, and long-context work
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek/deepseek-v4-flash",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call DeepSeek V4 Flash through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to deepseek/deepseek-v4-flash. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of DeepSeek V4 Flash?
DeepSeek V4 Flash has a context window of 1,000,000 tokens on Rapid Router, and returns up to 384,000 output tokens per reply.
Is there a free version of DeepSeek V4 Flash?
Yes. Call deepseek/deepseek-v4-flash:free and the request is paid for from Rapid Router's sponsored daily pool, within the free tier's daily request limit.
What can DeepSeek V4 Flash do?
On Rapid Router, DeepSeek V4 Flash supports tool calling, JSON mode, extended reasoning.