Claude Opus 5
A thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.
A specific Anthropic Claude Opus 5 model release, referenced in the supplied 2026 evidence context as an agentic, multimodal-capable model used through Claude Code and Codex.
Pricing
All prices are USD per million tokens (MTok). Official table lists 5m cache writes at $6.25/MTok, 1h cache writes at $10/MTok, and cache hits and refreshes at $0.50/MTok.
Anthropic's official pricing documentation explicitly lists Claude Opus 5 at $5 per million input tokens and $25 per million output tokens. It also lists cache hits and refreshes at $0.50 per million tokens, with cache writes at $6.25 per million tokens for 5-minute writes and $10 per million tokens for 1-hour writes.
Model Intelligence
Recent stories
Meng To released code and prompts for a scrolling bookshelf demo refined through many Codex prompts. Karpathy separately used Claude Opus 5 to turn the opening of LOTR into a 5,500-line Three.js render.
Meng To used Opus 5 through Codex and Claude Code to rebuild Sakura Crossing as a single-file Three.js scene. Other demos show one-prompt Fallout-style RPGs and a Pool Rooms survival-horror level.
LLMJunky demoed Slopet League, a Rocket League-style prototype in Godot, saying Opus 5 made the map, physics, effects, and animations. He says GPT 5.6 Sol made car meshes and the build took about 1.5 days.
New Opus 5, Codex, and Fable demos showed agents creating 3D worlds, Blender assets, Godot ports, and one-shot games. Pushback focused on whether the clips become games worth playing.
Shared resources included design-skills repos, a UI visual dictionary, CRM table tokens, and Claude Opus 5 website prompts. The reusable context can speed front-end generation but does not replace product-specific design choices.
Anthropic launched Claude Opus 5 for Claude Code and the API with high-effort defaults, fast mode, migration tooling, mid-conversation tool changes, and routing fallback. The model scored 43.3% on Frontier-Bench v0.1.
Creators posted demos where Opus 5 built browser 3D games, Codex Sites produced a Three.js game, and Grok 4.5 helped redesign a Steam card game. Some workflows now pair video concepts with Claude Code, but the evidence is demo-based.