Originally published on AI Tech Connect.
What you need to know Composer 2.5 shipped around 18 May 2026, built on Kimi K2.5 and — per Cursor — trained on roughly 25 times more synthetic coding tasks than Composer 2. Cursor published its own benchmarks comparing Composer 2.5 against Composer 2, Claude Opus 4.7 and GPT-5.5 across three suites, claiming it matches the frontier models on coding at significantly lower cost. Those numbers are first-party. "Matches at lower cost" is a claim to verify, not a fact to repeat. Run it against your own task distribution before you switch your default model. The @cursor/sdk entered public beta on 29 April 2026 — a TypeScript package that exposes the same agent runtime powering the Cursor desktop app, CLI and web app, runnable locally or in Cursor's cloud. Pro tip Before you read a single…
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