Anthropic debuts flagship Claude Opus 4.8 AI model as IPO race with OpenAI heats up

Anthropic (ANTH.PVT) on Thursday released its latest flagship AI model, Claude Opus 4.8. The new model, an upgrade over the company’s prior leading offering Opus 4.7, comes as Anthropic and archrival OpenAI (OPAI.

Anthropic's Claude Opus 4.8 is here with 3X cheaper fast mode and near-Mythos level alignment

Opus 4.8 shows a growing tendency to reason explicitly about how its outputs will be graded, including in environments where it wasn't told it was being evaluated.
Crypto Briefing

Anthropic rolls out Claude Opus 4.8 and teases broader Mythos release in coming weeks

Anthropic launched Claude Opus 4.8 with stronger coding tools while teasing broader Mythos access in the coming weeks.
Tech Times

Claude Opus 4.8 Remote Execution Leaves Four Times Fewer Code Flaws Unflagged, Beats GPT-5.5 on Coding

Claude Opus 4.8 is Anthropic’s new flagship AI model, released May 28, 2026, and the company says it is about four times less likely than Opus 4.7 to leave flaws in its own code unflagged. Pricing holds at $5 and $25 per million tokens,
PCMag on MSNOpinion

Want to vibe code? Use ChatGPT instead of Claude

I vibe coded with both Claude and ChatGPT, and the latter is just the better tool right now. It causes fewer headaches and generates more reliable results.