Anthropic Launches Claude Opus 5 at Same Price as Predecessor with Major Upgrades

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Anthropic released Claude Opus 5 on July 24, 2026, priced at $5 per million input tokens and $25 per million output tokens, matching its predecessor Opus 4.8 and undercutting rival Fable 5 by half. The model features a 1-million-token context window and 128K max output, and now enables extended thinking by default rather than requiring explicit activation. A key migration consideration is that developers must increase max_tokens to accommodate both the internal thinking and visible response output. Benchmark results from Anthropic show Opus 5 performing comparably or better than Fable 5 on several tests including OSWorld 2.0 and CursorBench 3.2, though it lags behind in exploit development tasks. The model is currently available only via the Claude API and is not accessible on Amazon Bedrock, Google Cloud, or Microsoft Foundry.

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