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claude-sonnet-5 vs step-3.7-flash:free

claude-sonnet-5 and stepfun/step-3.7-flash:free 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
1 advantage
step-3.7-flash:free
1 advantage

How to choose

claude-sonnet-5Longer context: 1M tokens
step-3.7-flash:freeOpen weights

claude-sonnet-5

By Anthropic

Use in chatDetails

step-3.7-flash:free

By StepFun

Use in chatDetails

Where they differ

claude-sonnet-5step-3.7-flash:free
On this site
—Availability, last 3 days69%79 calls
$0.004Price per replyFree
$15.00Price per million charactersFree
The model itself
1M tokensContext length256K tokens
128K tokensLongest reply256K tokens
Used to train and improve the provider’s models.Conversations used for trainingThe provider does not say.
Jan 2026Knowledge cutoffMar 2026
30 Jun 2026Released29 May 2026
NoOpen weightsYes

Where they match

  • Place in this week's rankingUnranked
  • 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.

Compare next

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 Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.