●Limited preview

DeepSeek V4.1 Flash speed results

The limited DeepSeek V4.1 Flash preview is now in TOKRACE's free trial pool. TOKRACE verified the temporary model ID with a direct API call on 2026-09-09; the ID says it expires on September 10, while real-world output speed and TTFT samples are being collected.

Status note: As of 2026-09-09, this temporary ID is not listed in DeepSeek's public /models catalog, and separate V4.1 Flash pricing and full specifications have not been published. TOKRACE reports only the connectivity it verified and does not present this preview as a general release.
Median output
—tok/s
TTFT
—s
Peak
—tok/s

· Speed metrics appear automatically once user samples reach the threshold · Updates every 5 minutes

Model specs

ProviderDeepSeek
API model IDdeepseek-v4.1-flash-expires-on-0910
Direct verification2026-09-09
ID-labeled expiry2026-09-10

Reference: DeepSeek public API docs

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FAQ

What is the DeepSeek V4.1 Flash API model ID?

TOKRACE directly verified the temporary ID deepseek-v4.1-flash-expires-on-0910 on 2026-09-09. It was absent from the public /models response that day, so treat it as a limited preview rather than a stable production model.

Is DeepSeek V4.1 Flash generally available?

No. The currently verified model is a temporary ID containing expires-on-0910; DeepSeek has not separately announced V4.1 Flash in its public model catalog, changelog, or pricing page.

When will DeepSeek V4.1 Flash speed data be available?

DeepSeek V4.1 Flash is already in the free trial pool; speed metrics come from anonymized real user runs. Once enough samples accumulate, this page automatically shows median output tok/s, TTFT and peak speed. You can run the first test right now.