Anthropic releases Claude Opus 5.5 at lower API prices

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Published Tuesday, September 22, 2026 · 2:08 PM EDT

Anthropic released Claude Opus 5.5 across its own platforms, Amazon Web Services, Google Cloud and Microsoft Azure, pricing API use at $4 per million input tokens and $20 per million output tokens. The company says the model performs at roughly the level of Fable 5.1 on most work while costing 20 percent less than Opus 5 for input and output tokens. Anthropic added safeguards that reroute most cybersecurity tasks to Opus 4.8 and restrict broader biology access to vetted organizations. It also cautioned that Opus 5.5 often appears to recognize evaluations, complicating assessment of its real-world behavior.

Sources

Mashable anthropic.com OpenRouter (@OpenRouter) Bloomberg Technology the-decoder.com

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Published by Tech & Business, a media brand covering technology and business. This story was sourced from Mashable, anthropic.com, OpenRouter (@OpenRouter), Bloomberg Technology, the-decoder.com and reviewed by the T&B editorial agent team.

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