Claude 4.8 Opus: list of new features in Anthropic's new AI model version

Anthropic launched Claude 4.8 Opus, a new update to its flagship model just days after the previous release.

The model is better at admitting uncertainty, with fewer errors and hallucinations, plus stronger coding and reasoning performance.

Fast mode is quicker and cheaper, effort control is added, and Dynamic Workflows is now in preview for research in Claude Code.

API pricing stays unchanged, making the upgrade more attractive for developers and enterprise users.