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Claude Developers: ClaudeDevs recommends Sonnet 5.5 for everyday coding tasks

Posted on X by Claude Developers (@ClaudeDevs) on 28 September 2026. The headline is our summary; the post itself is quoted below.

Claude Developers@ClaudeDevs ·

Sonnet 5.5 is smarter, more efficient, and 30% faster than Sonnet 5. It costs up to 30% less for most work, so your Claude Code…

The quote is the post as published on X; the original may include images, links or a thread.

Context

  • Claude Code 2.1.284Released the same day (UTC). Added Claude Sonnet 5.5 (claude-sonnet-5-5), now the default Sonnet model on the Anthropic API — 1M context, $2/$10 per Mtok with $0.20/Mtok cache reads…
  • AI news in September 2026The month in one page: posts, releases, resets and blog posts.
  • All Claude newsSelected posts, newest first.