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 MoreCopilot Code Review Integrates Agent Skills and MCP: Team Guidelines Finally Can Be Included in Reviews
On July 29, 2026, GitHub announced the general availability of Copilot code review support for Agent Skills and MCP servers, which is now available to Pro, Business and Enterprise users. Teams can inject internal coding and review specifications via the SKILL.md file in the .github/skills directory; MCP can pull external contexts such as Jira and document systems in read-only mode, and attribution tags for skills and MCP are added to review comments. This article sorts out the core capabilities of the general release, the configuration examples of SKILL.md, the read-only security boundary of MCP and implementation suggestions.
Read MoreCopilot Connects to Grok 4.5 and Claude Opus 5 in July, IDE Becomes a Battlefield for Agent Model Selection
On July 24 and 28, 2026, GitHub's official Changelog consecutively announced that Claude Opus 5 and Grok 4.5 have been integrated into GitHub Copilot, and users can switch between them via the model selector in VS Code, Copilot CLI, JetBrains and other entry points. Opus 5 is designed for complex long-chain Agent tasks, while Grok 4.5 boasts a maximum context window of 500,000 tokens and parallel tool calling. For Business/Enterprise plans, the feature requires administrators to enable the relevant policy, and Grok 4.5 is disabled by default. This article sorts out the access scope, plan differences, billing methods and selection references based on the official announcements.
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