Briefing · new model
DeepSeek-V4.1-Flash-1017 released with Search and Fetch API pricing
DeepSeek has released DeepSeek-V4.1-Flash-1017, available on their website, app, and API. The company also opened its Search & Fetch APIs to all users at a cost of $0.75 per 1,000 calls per endpoint. While server-side tool usage in specific harnesses is currently free, billing for these calls begins on October 31, 2026. Source: DeepSeek, read on .
What the source says
The new model DeepSeek-V4.1-Flash-1017 is live on the website, app, and API.
“Now live on our website, app, and API.”
Search and Fetch API endpoints are priced at $0.75 per 1,000 calls.
“💰 Each endpoint: $0.75 per 1,000 calls.”
Billing for Search and Fetch calls via server-side tools starts on October 31, 2026.
“Billing starts Oct 31, 2026, at 16:00 UTC .”
Where this lands in our prices Calculated cost per task at today's listed prices
Models named in the source that we already track, with the standard tasks recalculated by our engine at the prices listed today — visible output only, no cache discount. These numbers are ours, not the source's.
| Model | L1 micro | L2 analysis | L3 agentic | |
|---|---|---|---|---|
| DeepSeek: DeepSeek V4.1 Flash 1017 | $0.0007 | $0.051 | $0.405 | Open in the calculator |
What to check
- Check if current applications use DeepSeek-V4.1-Flash or earlier versions that may need updating to V4.1-Flash-1017 for improved performance.
- Review integration code using Search & Fetch APIs to account for the $0.75 per 1,000 calls pricing structure.
- Monitor costs associated with server-side tool usage in DeepSeek Harness, Claude Code, and Codex before the billing start date.
- Evaluate if upgrading to DeepSeek Harness v0.2.1-rc.1 or later is required for optimal compatibility with the new model.
How this page is made
The quotes above are copied word for word from the source page as read on 18 Oct 2026 and checked against its text. Any task-cost figures are calculated from our own tracked prices on the build date; the source did not provide them. This is a dated record of what the source published, not advice.