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How fast is 10 tokens per second really?

Summary

Mike Veerman's HTML app simulates LLM token output speeds from 5 to 800 tokens/second, helping users visualize the real meaning of speed claims.

How fast is 10 tokens per second really?
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How fast is 10 tokens per second really?

Simon Willison’s Weblog

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20th May 2026 - Link Blog

How fast is 10 tokens per second really? (via) Neat little HTML app by Mike Veerman (source code here) which simulates LLM token output speeds from 5/second to 800/second.

Useful if you see a model advertised as "30 tokens/second" and want to get a feel for what that actually looks like.

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This is a link post by Simon Willison, posted on 20th May 2026.

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Key points and analysis

Article intelligence

EngineersAdvanced

Key points

  • A simple HTML tool by Mike Veerman visualizes different token generation speeds.
  • Speed ranges from 5 to 800 tokens per second cover common model performance.
  • Helps users grasp what marketing numbers like '30 tokens/second' actually feel like.

Highlights and analysis are generated automatically and may contain errors. Check the original source.