Anthropic Launches Claude Opus 5 — Near-Frontier Intelligence at Half the Price

Anthropic launched Claude Opus 5 on July 24 — by the company's own description, a model that comes close to the frontier intelligence of Claude Fable 5 at half the price. Pricing stays at the same level as the prior Opus 4.8 — $5 per million input tokens and $25 per million output tokens — while the context window grows to 1 million tokens, according to Anthropic's official announcement.

• The context window is 1M tokens (both default and maximum), with up to 128K output tokens in standard mode and up to 300K via the batch API.
• On ARC-AGI-3, the score is three times higher than the next-best model; on OSWorld 2.0, it surpasses Fable 5 at a third of the cost.
• "Thinking" mode is now on by default — above the high effort setting, it can no longer be fully disabled.

It's a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.

"It's a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price," Anthropic's announcement states.

An independent breakdown of the specs confirms these figures and notes that the $5/$25 per-million-token pricing is unchanged from Opus 4.8 — an unusual move, since competitors typically raise prices alongside capability. We've already covered Anthropic's strategy and what the company is betting on — Opus 5 continues that line: agentic tasks and safety over chasing the loudest benchmark number.

None of this should be read as personalized investment advice.