Claude Opus 5 as a coding agent in your terminal
Claude Opus 5 by Anthropic, one of 250+ models you can use in Darce, the open source AI coding agent you can undo.
| Model | Claude Opus 5 |
|---|---|
| Vendor | Anthropic |
| Model id | anthropic/claude-opus-5 |
| Context window | 1M tokens |
| Price per 1M tokens | $5.00 input · $25.00 output (OpenRouter) |
| Can do | tool calling · reads images · reasoning |
| Category | Reasoning |
Strengths
The previous Claude Opus generation. Still a capable option for complex work if you prefer its behaviour or want to compare.
OpenRouter's description:
Claude Opus 5 is Anthropic’s flagship model for demanding reasoning, coding, and long-horizon agentic work. It is particularly strong at end-to-end software tasks, code review and bug finding, visual analysis...
Use Claude Opus 5 as a coding agent in your terminal
Start Darce in your project with Claude Opus 5:
npm install -g darce-cli
darce --model anthropic/claude-opus-5Already in a session? Type /model anthropic/claude-opus-5, or open the picker with Ctrl+P. Darce then reads your code, edits files and runs commands with Claude Opus 5; risky commands ask first, and /undo reverses any change, including what shell commands did. No account yet? npx darce-cli lets you try it free. Which plan includes which models is on the pricing page.
Make it your default or a gear
In ~/.darcerc, set it as the starting model or add it to the gears you move between with Shift+↑ / Shift+↓ (see configuration):
{
"router": { "default": "anthropic/claude-opus-5" },
"gears": ["qwen/qwen3-coder", "anthropic/claude-opus-5"]
}Compare it on your own code
Benchmarks rarely match your repository. Race Claude Opus 5 against two other models on a real task and keep the best diff:
/derby --models anthropic/claude-opus-5,anthropic/claude-opus-5.5,anthropic/claude-sonnet-5.5 fix the failing testRead more about /derby and /swarm.
Related models
- Claude Opus 5.5 (Anthropic): 1M tokens, $4.00 / $20.00 per 1M tokens
- Claude Sonnet 5.5 (Anthropic): 1M tokens, $2.00 / $10.00 per 1M tokens
- Claude Haiku 5.5 (Anthropic): 1M tokens, $0.10 / $0.50 per 1M tokens
- Claude Fable 5.1 (Anthropic): 1M tokens, $10.00 / $50.00 per 1M tokens
- GPT-6 Sol (OpenAI): 1.05M tokens, $2.00 / $10.00 per 1M tokens
- GPT-6 Astra (OpenAI): 1.05M tokens, $10.00 / $50.00 per 1M tokens
- GPT-5.5 (OpenAI): 1.05M tokens, $5.00 / $30.00 per 1M tokens
- Qwen3.8 Max (0902) (Qwen (Alibaba)): 1M tokens, $2.00 / $6.00 per 1M tokens
All models · Getting started · Claude Code alternative
Model data from OpenRouter, refreshed daily. Prices are OpenRouter's list rates and show relative cost; your Darce allowance is used in proportion to them.