Claude Sonnet 5.5
Claude Sonnet 5.5 New Sonnet model from Anthropic today. They say it "runs 30%+ faster, and costs up to 30% less for most work" - it's priced the same as Sonnet 5 but appears to beat it on every benchmark, and should be cheaper to run as well. Here are some pelicans riding bicycles . Sonnet 5.5 suffered from the same bug as Opus 5.5 : the "max" thinking effort pelican thought for 128,000 tokens…
Anthropic unveiled Claude Sonnet 5.5, a faster and more cost-effective model compared to its predecessor. The new model maintains the same pricing structure as Sonnet 5 but demonstrates superior performance across various benchmarks. However, Sonnet 5.5 shares a common bug with Opus 5.5, limiting the maximum thinking effort to 128,000 tokens before exhausting the token budget and failing to generate an SVG.
Despite this limitation, the model successfully generated an SVG for a pelican riding a bicycle using 5.74 cents of computational resources and 41 seconds of processing time. Claude Sonnet 5.5 has quickly become the model powering the free tier on claude.ai, surpassing OpenAI's ChatGPT free tier, which utilizes Luna 5.6. This development positions Anthropic as the provider of a more capable free offering.
Additionally, Anthropic announced that Haiku 5.5 will be available in the near future, with the hope that it will match the pricing competitiveness of GPT-6 Luna.
Written by urgent.news from Simon Willison's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
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- Claude Sonnet 5.5 anthropic.com
