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Launch2w ago

Anthropic's Claude Haiku 5.5 Matches GPT-6 Luna Pricing but with a Twist

Simon Willison1 min brief

In brief

  • Anthropic has introduced its updated model, Claude Haiku 5.5, which now directly competes in pricing with OpenAI's GPT-6 Luna.
  • Both models charge $0.10 per million input tokens and $0.50 per million output tokens up to 100,000 tokens.
  • Beyond that threshold, prices escalate differently: Haiku 5.5 jumps to $0.50 for inputs and $2.50 for outputs, while Luna only increases slightly at higher token counts.
  • The new model also features a revised tokenizer, meaning users may need more tokens for the same task compared to its predecessor, Haiku 4.5.
    • This could result in hidden costs for those with larger workloads.
  • For smaller tasks within 100,000 tokens, Haiku 5.5 offers better benchmark scores, making it a strong contender to Luna.
  • However, for larger outputs, Luna remains more cost-effective.
  • The updated model is integrated into Anthropic's plugin system, allowing seamless updates without requiring new versions for each release.
  • Users can now test Claude Haiku 5.5 with different reasoning levels, revealing that even the most complex tasks remain affordable-like generating detailed SVGs in just a few cents.
    • This move by Anthropic underscores their commitment to making high-quality AI accessible while subtly shifting costs through tokenization changes.

Terms in this brief

tokenizer
A tool that processes text into smaller units (tokens) for AI models to understand and work with. Different tokenizers can affect how much text is processed and thus influence costs when using AI services.
plugin system
A feature allowing users to extend or customize AI model functionality without changing the core model itself. Plugins can add new capabilities or modify behavior, making integration easier for developers.

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