This section tracks Claude model versions individually: what each release changed, how the community rated it in its first weeks, and how it performs on benchmarks. Anthropic ships several Claude releases a year across the Opus, Sonnet, and Haiku families, and version differences matter: a workflow tuned for one release can behave differently on the next.
Each model page collects launch facts with absolute dates, notable strengths and issues reported by real users on our live Claude tracker, and LMArena standing from the Claude benchmarks. New pages are added as models ship, so this section grows with every release.
In This Section
Claude Fable 5: What's New, Pricing, and How It Performs
Claude Fable 5 launched June 9, 2026 as Anthropic's first Mythos-class model. What it does well, what it costs, and how users are rating it so far.