Claude Opus 4.8Launches: Programming and Agent Tasks Outshine GPT-5.5

Anthropic has officially dropped Claude Opus 4.8, making major gains in programming, Agent tasks, and expertise work. This new version features user-controlled effort adjustments, Claude Code's dynamic workflow capabilities, with a speed boost of 2.5x in quick mode and a 3x price cut.

In the Super-Agent benchmark tests, Opus 4.8 is the only model to complete every end-to-end case, clearly dominating GPT-5.5. It smashed records in various professional evaluations like CursorBench and Legal Agent Benchmark. Early testers have noted its "significantly improved judgment," "more efficient tool calls," and "substantial honesty upgrades."

Why it matters: This marks a new era for AI in Agent programming and expertise work, directly enhancing developer productivity and the quality of enterprise AI applications.

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