Claude Opus 5 Rumored to Launch This Week
thesaraharminta · x · 2026-07-18
According to a repost, Anthropic is still internally discussing whether to proceed with the new version release as planned. Sources indicate that Claude Opus 5 could go live as early as later this week.
Additionally, the original text mentions that they currently do not plan to keep Fable 5 in subscriptions, with eligibility slated to end after July 19. A successor is slated for August to compete with GPT-6. The message also notes that the team believes they could launch an Opus version similar to Fable but with lower inference costs.
Related event: Anthropic Rumored to Release Claude Opus 5 and Restore Fable 5 Access(2 posts)→
More from Models
- Sol61 flunks instruction-following: skips mandated research even when explicitly told — lucasmeijer · 2026-10-26
- Kimi K3.1 Pro tops MathArena open models, closing frontier gap to about 6 months — teortaxesTex · 2026-10-26
- Ruff creator Charlie Marsh: frontier models find infinite bugs in any software — charliermarsh · 2026-10-26
- Dev testing one skill across Opus 5.5 and Sol 6.1 finds instruction following 'all over the map' — lucasmeijer · 2026-10-26
- supermemory unveils learner-1, claiming continual learning for any model — julianweisser · 2026-10-26
- Anthropic says Opus 5.5 cuts cost per task by ~40% vs Opus 5 — taufiqintech · 2026-10-26