Claude Opus 5.5
Anthropic model for long-running agentic coding and knowledge work.
Fast mode $8 / $40. Batch API is 50% off. Checked 2026-10-14.
Quick start
Create an API key, store it in an environment variable, and send one small test request before wiring the model into your app.
Good and not so good
- Strong at long coding tasks
- Fast mode available
- Fast mode doubles the price
Use cases with Claude Opus 5.5
Run a solo content team with agent skills
Runs Opus 5.5 in Claude Code as editor-in-chief over nine skill sets that cover topics, writing, visuals, video editing, sound and scheduling.
Build a point-and-click adventure game with no asset files
Building a 90s-style pirate adventure with Claude Code and Opus 5.5 where there are no image or audio files.
Remake a 2D game in 3D in an afternoon
A creator had an AI model rebuild their game in 3D using Blender, Tripo for models and Godot as the engine, in about 90 minutes.
Make a music video from stills and a song
Take Midjourney stills and a Suno track, animate the stills with Kling, and have an AI model beat-track and edit to the lyrics.