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Data Science
Simon Willison's Blog·8d ago·5 min read
Introducing Claude Haiku 5.5
TL;DR
Anthropic has launched Claude Haiku 5.5, a new AI model that matches the pricing of OpenAI's GPT-6 Luna while offering improved benchmark scores for workloads under 100,000 tokens. However, it uses a less generous tokenizer, leading to hidden costs.
✦ Why It Matters
Evaluate your token usage to determine if switching to Claude Haiku 5.5 is cost-effective for your projects.
Key Takeaways
- Consider switching to Claude Haiku 5.5 for workloads under 100,000 tokens.
- Be aware of the increased token usage with the new tokenizer.
- Utilize the new API credit system to manage costs effectively.
- Compare pricing structures of Haiku 5.5 and GPT-6 Luna for your needs.
How It Works
Claude Haiku 5.5 uses a new tokenizer that increases the number of tokens required for the same input, which can lead to higher costs despite lower base prices.