A collection of 29 posts
Anthropic launched Claude Opus 4.8 on May 28, 2026: SWE-bench Pro 69.2%, GDPval Elo 1890 (+121 over GPT-5.5), Fast mode 3x cheaper than 4.7, dynamic workflows for hundreds of parallel subagents. Pricing unchanged at $5/$25 per 1M. Full launch breakdown.
Anthropic Mythos is the frontier preview model unveiled April 7, 2026: stronger than Opus 4.7 on math and security, withheld from public release, shipped only via Project Glasswing to ~50 defensive-security partners.
Claude Sonnet 4.8 is not announced as of May 19, 2026. The honest status check: what's shipping, where the rumor came from, and what to run now.
Claude Code billing, Oct 2026: Pro and Team Standard now default to Opus 5.5 ($4/$20, cache reads $0.20 = 5% of input). Max gets $100 or $200/mo in API credits and Team up to $500/mo pooled; the credits don't cover interactive Claude Code. Plus Haiku 5.5 subagents.