One‑Line Magic: Using Claude Code Through Ollama

**MyrinNew** · 02-01-2026, 05:00 PM

requirements

Ollama v0.15+
You have pulled a model via ollama pull

ollama launch is a new command which sets up and runs coding tools like Claude Code, OpenCode, and Codex with local or cloud models. No environment variables or config files needed.

Run ollama launch

launch commands allow us to use a few AI coding agents.

Claude Code, Clawdbot(Openclaw), Codex, Droid, and OpenCode.

ollama launch
Select integration:
> claude - Claude Code (gpt-oss:20b)
clawdbot - Clawdbot
codex - Codex
droid - Droid
opencode - OpenCode

Then you will need to select a model you want use for Claude Code. (In this article, I used gpt-oss:20b model)

ollama launch

Launching Claude Code with gpt-oss:20b...

╭─── Claude Code v2.1.29 ────────────────────────────────────────────────── ────────────────────────────────────────────────── ─────────────────────────────╮
│ │ Tips for getting started │
│ Welcome back baxin! │ Run /init to create a CLAUDE.md file with instructions for Claude │
│ │ ────────────────────────────────────────────────── ─────────────── │
│ │ Recent activity │
│ ▐▛███▜▌ │ No recent activity │
│ ▝▜█████▛▘ │ │
│ ▘▘ ▝▝ │ │
│ gpt-oss:20b · API Usage Billing · baxin’s │ │
│ Individual Org │ │
│ ~\Desktop\dev\zenn-dev │ │
╰───────────────────────────────────────────────── ────────────────────────────────────────────────── ────────────────────────────────────────────────── ────╯

‼Auth conflict: Both a token (ANTHROPIC_AUTH_TOKEN) and an API key (/login managed key) are set. This may lead to unexpected behavior.
• Trying to use ANTHROPIC_AUTH_TOKEN? claude /logout
• Trying to use /login managed key? Unset the ANTHROPIC_AUTH_TOKEN environment variable.
/model to try Opus 4.5

────────────────────────────────────────────────── ────────────────────────────────────────────────── ────────────────────────────────────────────────── ─────
> Try "how does work?"
────────────────────────────────────────────────── ────────────────────────────────────────────────── ────────────────────────────────────────────────── ─────
? for shortcuts

OpenCode

How to Use Claude Opus 4.5 & Gemini 3 for Free with OpenCode

0xkoji ・ Jan 13

#ai
#opencode
#llm
#programming

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