DeepSeek V4 Flash
Officialdeepseek/deepseek-v4-flash
DeepSeek V4 Flash — fast, cheapest V4, thinking + non-thinking modes.
- Context window
- 1M
- Max output
- 393K
- Input modalities
- text
- Output modalities
- text
- Capabilities
- Reasoning · Tool Calling · Coding · Cache
- Upstream release
- 2026-07-31
- RouteMux name
- deepseek/deepseek-v4-flash
Try DeepSeek V4 Flash here
Tune the request, see the current price ceiling, and inspect the real response without leaving this model page.
Your result will appear here
Enter an input on the left. The same RouteMux Playground execution and billing path powers this embedded test.
DeepSeek V4 Flash API pricing
Source: deepseek_official_2026-08-17_peak_fx7.15 · Verified 2026-06-08
Cache read $0.013986/M · Cache write —/M
Estimate cost
Limited time20% extra Credits on your first top-up — up to 200 bonus Credits
Applies to your first top-up within 72 hours of signing up. Minimum $20, once per account.
Key capabilities
Interface and protocols
Use either ID to call this model via the API.
deepseek/deepseek-v4-flashReplace the ROUTEMUX_KEY placeholder with your API key. Create one →
from openai import OpenAI
client = OpenAI(
base_url="https://api.routemux.com/v1",
api_key="<ROUTEMUX_KEY>",
)
completion = client.chat.completions.create(
model="deepseek/deepseek-v4-flash",
messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(completion.choices[0].message.content)Performance (last 30 days)
DeepSeek V4 Flash FAQ
›What is DeepSeek V4 Flash?
DeepSeek V4 Flash — fast, cheapest V4, thinking + non-thinking modes.
›How large is the context window of DeepSeek V4 Flash?
DeepSeek V4 Flash supports a context window of up to 1M tokens, with up to 393K output tokens per request.
›How much does the DeepSeek V4 Flash API cost?
Through RouteMux, DeepSeek V4 Flash costs $0.41958 for input and $1.258741 for output (USD per 1M tokens), below the official list price.
›How do I call DeepSeek V4 Flash via API?
DeepSeek V4 Flash is OpenAI-compatible: point your base URL at RouteMux and set the model field to deepseek/deepseek-v4-flash — no code changes needed.
›Which input and output modalities does DeepSeek V4 Flash support?
DeepSeek V4 Flash accepts text as input and produces text as output.
›When was DeepSeek V4 Flash released?
DeepSeek V4 Flash was released on July 31, 2026.