Anthropic Releases Opus 5: New Default for Programming Agents, Half the Price of Fable 5 with Comparable Capabilities
On July 24, 2026, Anthropic released Claude Opus 5, making it the default model for Claude Code. Its pricing is the same as that of Opus 4.8, at $5/$25 per million tokens. The official stated that its capabilities are close to those of Fable 5, but the cost is only about half. The model enables adaptive thinking by default, and the effort parameter can be adjusted across five levels. It topped evaluations including Frontier-Bench v0.1 and GDPval-AA, and achieved 96.0% on SWE-bench Verified. On the same day, GitHub Copilot integrated Opus 5, covering multiple terminals such as VS Code and CLI. This article sorts out the evaluation data, key points of API migration, and suggestions for selecting between Opus 5 and Fable 5.
Read MoreAnthropic Launches Claude Opus 5: Near Fable 5 Capabilities, Opus-Level Pricing
On July 24, 2026, Anthropic launched Claude Opus 5, keeping its pricing at $5/$25 per million tokens. The company stated that its coding and knowledge work intelligence is close to that of GPT-4o (Fable 5). It scores 96.0% on SWE-bench Verified and 79.2% on SWE-bench Pro, supports 1 million-token context window and effort adjustment, and has been launched on Claude API, Claude Code and AWS Bedrock. Developers are heatedly discussing the cost-performance ratio of Agent coding.
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