Anthropic ships Claude Opus 4.8 as a "modest but tangible improvement" that tops GPT-5.5 in most benchmarks

Anthropic launched Claude Opus 4.8, its new flagship model, claiming it outperforms Opus 4.7, GPT-5.5, and Gemini 3.1 Pro on most benchmarks.

The model shows stronger agentic coding and reasoning results, along with fewer unsupported claims and improved reliability.

Anthropic also added dynamic workflows and configurable effort levels in Claude Code and Claude.ai.

Standard API pricing stays the same, while Fast Mode is now cheaper, aiming to improve enterprise value.