Leak says Claude Opus 5 is set to launch today, with benchmark results near Fable 5
mcraddock · x · 2026-07-23
- A reposted leak says Claude Opus 5 is scheduled to launch today, likely Thursday in most time zones, unless Anthropic hits a last-minute delay.
- The same source says Anthropic had been aiming for a Thursday release, and that benchmark performance should be roughly comparable to Fable 5 but not better than it.
- The attached image also shows the Claude Opus 5 branding, reinforcing that this is about an imminent model launch.
Related event: Leaks suggest imminent release of Claude Opus 5 with UI screenshots(14 posts)→
More from Models
- BullshitBench update: GPT-6-Astra beats all prior OpenAI models but still trails Anthropic — scaling01 · 2026-09-11
- Astra Scores 83% on GauntletBench, First Computer-Use Agent to Beat Human Baseline — ducha_aiki · 2026-09-11
- Kimi K2.8 Preview rolls out: near-K3 coding performance, 1M context for all tiers — teortaxesTex · 2026-09-11
- Looking for a classifier of software engineering task shapes to pick models per task — StewartalsopIII · 2026-09-11
- DeepSeek V4 Pro API to continue after Sept 2026, billing unchanged — teortaxesTex · 2026-09-11
- DeepSeek V4.1 Flash Hits 98% of GPT-6 Astra's Score at 1.4% of the Cost in Third-Party Benchmark — ayushtweetshere · 2026-09-11