←Back to NewsAI News/DevelopmentnewsDevelopmentLlmsGitHub Brings Anthropic's Claude Sonnet 5.5 to Copilot, Beating Opus on Terminal TasksAnthropic's new mid-tier model lands in GitHub Copilot with matching Sonnet 5 quality but fewer steps, tokens, and tool calls per task.SourceGitHubPublishedSep 28, 2026, 6:19 PMAuthorAlphaSignal NewsroomRead1 min readAnthropic's new mid-tier model lands in GitHub Copilot with matching Sonnet 5 quality but fewer steps, tokens, and tool calls per task.Reporting is indexed from AlphaSignal. Rights remain with the original publisher and cited sources.Read original report ↗Next readsCognition · newsCognition Adds Claude Sonnet 5.5 to Devin, Cutting Coding Costs by 30%Cursor · newsAnthropic's Claude Sonnet 5.5 Beats Opus on Coding While Cutting Costs 30%Ben Dickson · deep-diveSystem One models are carving out a new layer in the AI stack
