DeepSeek V3Chat
Powerful open-source model excelling at code and mathematics.
50.6sp50100%up1 rail128K ctx$0.006typical$0.81 → $2.38 /MTok
Playground
Providers
| Provider | Role | Context | Price · in / out |
|---|---|---|---|
 fireworksNo trainingNo training on your data. Zero-retention available | Primary | 1M | $0.29 / $0.43/MToksame price, any rail |
| ddeepinfraNo trainingNo training on your data | Fallback | 1M | |
| g |
Performance
Collecting — charts appear after two days.
Pricing
- Typical
- $0.002/req
- Input
- $0.29/M tok
- Cached input
- $0.16/M tok
- Output
- $0.43/M tok
API
POST/api/v1/chat/completionsOpenAI-compatible
deepseek-v4-flash-0731
curl https://www.ninjachat.ai/api/v1/chat/completions \
-H "Authorization: Bearer $NINJACHAT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4-flash-0731",
"messages": [{ "role": "user", "content": "Hello!" }],
"stream": true
}'messagestemperaturemax_completion_tokenstop_pstopfrequency_penaltypresence_penaltyseedstreamuserroutingtoolstool_choice
FAQ
What is DeepSeek V4 Flash 0731?
The most popular OpenRouter model this week, served directly through Fireworks.
How much does DeepSeek V4 Flash 0731 cost?
DeepSeek V4 Flash 0731 costs $0.29/M input tokens and $0.43/M output tokens.
What inputs and outputs does DeepSeek V4 Flash 0731 support?
DeepSeek V4 Flash 0731 accepts text and returns text.
How do I call DeepSeek V4 Flash 0731?
POST /api/v1/chat/completions with `"model": "deepseek-v4-flash-0731"`.
What other DeepSeek models are on NinjaChat?
DeepSeek V3, DeepSeek V4 Pro 0813.
