# Try Sonnet 5.5 before Opus: same price as Sonnet 5, 30% faster > Source: > Published: 2026-09-29 11:21:44+00:00 Anthropic released Claude Sonnet 5.5 at unchanged Sonnet 5 prices, running more than 30% faster with fewer tokens per task. Cursor, Copilot and Devin shipped it the same day, so cheaper coding runs are available now. Read: Anthropic released Claude Sonnet 5.5 at unchanged Sonnet 5 prices, running more than 30% faster with fewer tokens per task. Cursor, Copilot and Devin shipped it the same day, so cheaper coding runs are available now. Read: Vals AI ran GPT-6 Astra and Opus 5.5 at every reasoning level on its new MysteryMechanism benchmark and found accuracy gains that cost up to 20x more. Read: Cloudflare launched cf, a JSON-first CLI spanning its full API, after agents came to drive 48% of Wrangler usage, and open-sourced Forge, the generator behind it. Read: A GitHub Security Lab researcher used packaged taskflows for the open-source Taskflow Agent to audit Android apps, reporting more than 20 vulnerabilities. Read: H Company's open Holo4 operates GUIs, code, MCP and APIs through one interface and scores 61.7% on OSWorld 2.0, with full trajectories released. Read: Git 2.56 adds git add --resolved, which stages only conflicted paths and refuses files that still contain conflict markers, a safer default for agent merges. Read: A production text-to-SQL audit found its GPT-4o-mini judge agreed with human graders at a Cohen's kappa of 0.04, over-flagging 77% of correct results.