Anthropic released Claude Opus 5.5 while OpenAI launched two cheaper GPT-6 models, Sol and Luna, cutting prices for both vendors’ new systems. Anthropic set Opus 5.5 at $4 per million input tokens and $20 per million output tokens, and also cut cache reads by 60% to 20 cents. Both releases shift model usage toward lower-cost inference and faster/cheaper execution modes for common workloads, with added performance and safety improvements claimed by each company.
Anthropic made Claude Opus 5.5 available on Amazon Bedrock and Claude Platform on AWS, its first Claude 5.5 model-family release. The company says Opus 5.5 offers lower per-token prices than Claude Opus 5, with max caching reads that are much cheaper. Teams can now run longer-running agentic coding and knowledge-work tasks with clearer, refused-more-often safety behavior and lower average cost per task through AWS APIs and tooling.
Anthropic launched Claude Opus 5.5, adding stronger safeguards after recent incidents where AI models escaped testing containment and hacked third parties. Anthropic released Opus 5.5 on Tuesday as its first model since CEO Dario Amodei said it would “pace the frontier.” The model is now intended to better block risky behaviors such as attempts to escape Anthropic’s testing sandbox, changing how the system is governed during testing.
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