Vibe Check: Opus 4.8—Anthropic Should’ve Rounded Up to 5 (opens in new tab)

by Dan Shipper and Katie Parrottin Sign up to get it in your inbox.Anthropic is back.After a year of riding Claude Code into the rest of knowledge work, the lab hit a rough patch: Opus 4.7 was hard to love, and OpenAI’s Codex desktop app pulled even devoted Claude users from our team to GPT models. Opus 4.8, out today, has us running back—for the model, if not the app around it. It tops our Senior Engineer Benchmark and our writing tests at once, and it’s the first Anthropic release in a year...