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Claude: Speed up responses with fast mode

sourceSimon Willison
calendar_todayFebruary 8, 2026
schedule2 min read
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EXECUTIVE SUMMARY

Accelerate AI Responses with Claude's New Fast Mode

Summary

Anthropic has introduced a faster version of its Claude Opus 4.6 model, accessible via a new fast mode in Claude Code, albeit at a significantly higher cost. This new feature allows for quicker responses but comes with a price tag that is six times the normal rate.

Key Points

  • The new fast mode for Claude Opus 4.6 is available by typing /fast in Claude Code.
  • Pricing for fast mode is $30/million input and $150/million output, compared to the standard $5/million input and $25/million output.
  • A promotional discount of 50% is available until February 16, reducing costs to $10/million input and $50/million output.
  • The fast mode is reported to be 2.5 times faster than the standard version.
  • Claude Opus 4.5 had a context limit of 200,000 tokens, while 4.6 can handle up to 1,000,000 tokens at increased prices.
  • After February 16, prices for fast mode will rise to $60/million input and $225/million output.

Analysis

The introduction of a fast mode for Claude Opus 4.6 represents a significant advancement in AI response times, catering to businesses that require rapid processing of large amounts of data. The pricing structure reflects the premium nature of this service, which may influence budget considerations for organizations utilizing AI technologies.

Conclusion

IT professionals should evaluate the cost-benefit ratio of using Claude's fast mode, especially during the promotional period, to enhance their AI-driven applications while managing expenses effectively.