Claude Code + MiMo API Setup

Anthropic's Claude Code is a powerful AI coding agent in the terminal. It can be configured to use any OpenAI-compatible API — including MiMo. This guide walks you through setting up Claude Code to run on MiMo's models, giving you access to MiMo's coding benchmarks at a fraction of the cost of Claude's API.

Why Use MiMo with Claude Code?

Cost: MiMo-V2-Flash at $0.50/$1.50 per M tokens vs Claude 3.5 Sonnet at $3/$15 — up to 6-10× cheaper
Coding performance: MiMo-V2-Flash achieves 73.4% on SWE-Bench, higher than Claude 3.5 Sonnet (~46%)
Same interface: Claude Code's terminal UI, /ask and /edit commands, and Git integration remain unchanged

Prerequisites

Claude Code installed (see Anthropic's documentation)
A MiMo API key from platform.xiaomimimo.com

Step 1: Set Environment Variable

Claude Code reads the ANTHROPIC_BASE_URL environment variable to determine the API endpoint:

export ANTHROPIC_BASE_URL="https://api.xiaomimimo.com/v1"
export ANTHROPIC_API_KEY="miMo-sk-your-key-here"

Add these to your .bashrc or .zshrc to make the change permanent:

echo 'export ANTHROPIC_BASE_URL="https://api.xiaomimimo.com/v1"' >> ~/.zshrc
echo 'export ANTHROPIC_API_KEY="miMo-sk-your-key-here"' >> ~/.zshrc
source ~/.zshrc

Step 2: Launch Claude Code

claude

Claude Code starts normally. All commands — /ask, /edit, /debug, /run — work the same way, but the underlying inference is powered by MiMo instead of Claude.

Step 3: Select the Right Model

By default, Claude Code requests claude-sonnet-4-20250514. The MiMo API maps this to MiMo-V2-Flash. You can override the model in your Claude Code config:

# In ~/.claude.json or project .claude.json
{
  "model": "mimo-v2.5-pro",
  "maxTokens": 8192
}

Recommended Model Configurations

Use Case	Model	Cost per 100 sessions
Quick edits, simple questions	MiMo-V2-Flash	~$2-5
Complex refactoring, architecture	MiMo-V2.5-Pro	~$5-15
Full-modal (vision) tasks	MiMo-V2.5-Omni	~$5-20

Cost Comparison

Setup	Monthly Cost (500 sessions)
Claude Code + Claude 3.5 Sonnet	$100-200
Claude Code + MiMo-V2-Flash	$10-25
Claude Code + MiMo-V2.5-Pro	$25-75
MiMo Code (native)	$5-20

Limitations

MiMo API doesn't support Anthropic's extended thinking (sliding-window reasoning) — but in practice, MiMo's reasoning RL training produces comparable outputs without it.
Vision/image inputs only on V2.5-Omni (not V2-Flash or V2.5-Pro)
Some Claude-native features (like artifact rendering) may behave differently

Troubleshooting

"Invalid API key": Verify your key at platform.xiaomimimo.com
"Model not found": Check that you're using the correct model ID (mimo-v2-flash or mimo-v2.5-pro)
"Rate limited": Wait 30 seconds and retry; consider upgrading to a Token Plan

Next Steps

Try MiMo Code — Xiaomi's own terminal coding agent for native MiMo integration
Read the MiMo Code deep dive
Explore the FAQ