Browsing: fable

Less than two months after the release of Claude Opus 5, Anthropic is back with Opus 5.5. The big pitch for Opus 5 was that it had “near Fable” performance at half the price. This time, the headline is that the workhorse AI Opus 5.5 delivers Fable 5.1 performance for most work and costs about…

Three coding-focused AI models are splitting the leaderboards this month, and none of them agree on who’s actually winning. Claude Fable 5.1 tops Anthropic’s own coding-specialist line. GPT-5.6 Sol leads the independent SWE-bench Verified harness at 96.2%. And GLM-5.3, released by Z.ai on August 14, 2026, just posted the biggest single-version jump of the year…