Wire · technology
Claude Sonnet 5.5 Launches at Sonnet 5 Prices, With Scores Approaching Opus 5.5
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Fusion42 · 29 September 2026 · Fusion42 review
Anthropic launched Claude Sonnet 5.5 at the same API prices as its predecessor Sonnet 5, improving output speed by over 30% and reducing task completion cost by up to 30%. The model targets everyday tasks like document drafting and code fixes, and is now available on AWS, Google Cloud, and Microsoft Azure alongside plans for a low-cost high-volume model called Haiku 5.5.
This Wire brief sits within Fusion42's coverage of AI Frontier Models, and 2 sources have reported it between 29 Sep 2026 and 30 Sep 2026.
◆ ◆ The Wire takeaway
You can now deliver faster, lower-cost AI-assisted document and code tasks using Claude Sonnet 5.5 without paying more per token. Expect pressure on pricing and speed in mainstream AI tooling for workaday tasks.
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2 sources · first reported 29 Sep 2026 · latest 30 Sep 2026
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