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DeepSeek V4.1 Flash

New· 4

Long-context AI model with a 1M-token window, served through the deepseek-flash API alias

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TrustList summary

DeepSeek V4.1 Flash is an AI model from DeepSeek, released on 10 September 2026 and reached through the API alias deepseek-flash. Its context window is one million tokens, so it can take in very large inputs in a single request.

What DeepSeek V4.1 Flash does

  • Long context: a window of 1M tokens for large documents or sessions.
  • API access: served under the alias deepseek-flash.
  • Peak and off-peak tiers: the vendor's documentation sets separate tiers for peak and off-peak hours, with peak windows on weekdays in UTC.
  • Replaces V4 Flash: the earlier V4 Flash model names are still accepted, but their requests are now served by this model.

Key facts

  • Released: 10 September 2026
  • API alias: deepseek-flash
  • Context window: 1 million tokens

Summary written by TrustList from the business's own published information, Oct 2026.

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Trust Score

4/ 100
Trust Score: New

An earned signal from verification, reviews, awards, transparency and engagement - the vendor can't buy it.

Verification
0/100 · 20%
Reviews
0/100 · 30%
Awards
0/100 · 15%
Transparency
18/100 · 20%
Engagement
0/100 · 15%
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Updated 9/16/2026

What the business tells TrustList

Founded
2026 (0 years) evidence sent

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