DeepSeek V4 Flash on Run BiOS
deepseek-v4-flash
$10Welcome credit
New accounts start with $10 in credits — that’s about 100.0M input tokens of DeepSeek V4 Flash, on us.
Create an account128K contextTool callingReasoning
Pricing
USD per 1M tokens · as of 17 August 2026| Input | $0.10 |
| Output | $0.25 |
| Cached input | $0.01 |
Flat rate — every request bills the same. Full catalog and comparisons on the pricing comparison page.
Where it fits
The cheapest reasoning model in the catalog. High-volume, cost-sensitive workloads — classification, extraction, triage — where a reasoning trace still helps.
Not sure? BiOS Adaptive routes to the best model per request, including this one.
Call it now — OpenAI-compatible
curl https://api.runbios.ai/v1/chat/completions \
-H "Authorization: Bearer $BIOS_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4-flash",
"messages": [{ "role": "user", "content": "Hello" }]
}'Existing OpenAI SDK code works by changing the base URL to https://api.runbios.ai/v1 and the key. API overview