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claude-sonnet-5 vs deepseek-v4.1-flash

claude-sonnet-5 and deepseek-v4.1-flash are paused.A paused model is switched off for now and cannot be called. Its figures below are the latest this site has for it.

claude-sonnet-5
No edge in the figures
deepseek-v4.1-flash
1 advantage

How to choose

claude-sonnet-5No edge in the figures
deepseek-v4.1-flashOpen weights

claude-sonnet-5

By Anthropic

Use in chatDetails

deepseek-v4.1-flash

By DeepSeek

Use in chatDetails

Where they differ

claude-sonnet-5deepseek-v4.1-flash
On this site
—Availability, last 3 days89%137 calls
$0.004Price per replyFree
$15.00Price per million charactersFree
The model itself
128K tokensLongest reply384K tokens
Used to train and improve the provider’s models.Conversations used for trainingThe provider does not say.
Jan 2026Knowledge cutoffMay 2025
30 Jun 2026Released10 Sep 2026
NoOpen weightsYes

Where they match

  • Place in this week's rankingUnranked
  • Context length1M tokens
  • Reads imagesYes
  • Calls toolsYes
  • Thinks before answeringYes

Availability over 3 days counts every call made through the site; this week's availability counts every call over the last 7 days, scheduled tests included, and response time comes from the site's own scheduled tests. Free models are counted in calls; big models are charged by usage, in US dollars.

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Figures come from real calls made through this site. Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.