Why Nvidia NIM and Ollama Are Failing Developers
If you've been searching for a way to get Claude Code for free you've probably already tried the two most commonly recommended methods: Nvidia NIM and Ollama. Both have serious limitations that make them impractical for most developers.
The Problem with Nvidia NIM
Nvidia NIM was a popular option but comes with a growing list of problems. It doesn't support many countries so a large number of developers simply can't create or verify an account. Many users consistently run into API errors making it unreliable for serious development work. In India for example traffic spikes heavily after 6:00 PM and the API slows to a crawl during these hours. As more developers flock to Nvidia NIM for free AI models the infrastructure is under constant strain.
The Problem with Ollama
Ollama lets you run AI models locally but that freedom comes at a steep hardware cost. Even with a Mac with 64GB of RAM and an M5 Pro chipset the experience is frustrating. Fast models lack the intelligence needed for complex coding tasks. Intelligent models take so long to respond that they become impractical. Local AI coding is promising but it's simply not ready yet for most developers' hardware.
The Solution: OpenCode Zen + Minimax M2.5 Free
The setup uses OpenCode Zen as a provider for Minimax M2.5 — completely free, globally available, and no GPU required.
No region lock — works globally unlike Nvidia NIM No GPU needed — the model runs in the cloud No phone verification — just create an account and you're done No hard rate limits — soft limits apply based on traffic and OpenCode handles them automatically Works in OpenCode CLI, Claude Code CLI, or directly inside VS Code Is Minimax M2.5 Good Enough for Real Coding?
Minimax M2.5 benchmarks at Opus level. That means it competes with Claude Opus 4.6 on standard benchmarks. In a typical Claude Code Pro subscription most developers use Sonnet almost exclusively because Opus burns through your message quota after just four messages. Minimax M2.5 sits at the Sonnet to Opus range which means you can take on large complex coding projects without hitting a wall. It is not a toy model.
Mac & Linux Setup Guide
Step 1 — Get Your Free API Key from OpenCode Zen Go to opencode.ai and click on Zen. Click Login and sign in or create an account. Do not enable billing. Navigate to API Keys and click Create an API Key. Name it Claude Code and click Create. Copy the key and save it somewhere safe.
Step 2 — Install Claude Code Even if your goal is only to run Claude Code inside VS Code you must install the CLI first. Go to the official Claude Code website and copy the installation command. Paste it into your terminal and press Enter. Verify by typing claude --help.
Step 3 — Install OpenCode Go to opencode.ai and copy the installation command. Paste it into your terminal and press Enter. Once installed restart your terminal.
Step 4 — Run Free AI Coding in OpenCode Type opencode in your terminal. Type /connect and select OpenCode Zen. Paste your API key. Select Minimax M2.5 Free. Test it by asking which model are you — you'll see how fast it responds.
Step 5 — Configure Claude Code CLI Open your terminal and type code ~/.claude. Create a settings.json file inside the .claude folder if it doesn't exist and paste this configuration:
{
"env": {
"ANTHROPIC_BASE_URL": "https://opencode.ai/zen",
"ANTHROPIC_MODEL": "minimax-m2.5-free",
"ANTHROPIC_API_KEY": "opencode-api-key",
"ENABLE_TOOL_SEARCH": "true"
}
}Replace opencode-api-key with your actual key. Save the file. Type claude in terminal, select your theme, confirm yes to use the custom API, type /model and select Minimax M2.5 Free.
Step 6 — Run Claude Code in VS Code (Mac) Open VS Code and go to Extensions. Search for Claude and install the Claude Code for VS Code extension by Anthropic. Open any project folder, click the Claude Code icon in the sidebar, click New Session, type /model and select Minimax M2.5 Free.
Windows Setup Guide
Step 1 — Install Node.js via Chocolatey Search for PowerShell in the Start menu and run as administrator. Go to chocolatey.org/install and copy the install command. Paste it into PowerShell and press Enter. Once done close and reopen PowerShell as administrator. Install Node.js by pasting the Chocolatey Node.js command and pressing Enter. Verify with node -v.
Step 2 — Install OpenCode In PowerShell type npm install -g opencode-ai and press Enter.
Step 3 — Run OpenCode Type opencode. Type /connect and select OpenCode Zen. Paste your API key. Select Minimax M2.5 Free. Test it — responses come back in about 2 seconds.
Step 4 — Install Claude Code on Windows Go to the Claude Code documentation and find the Windows PowerShell install command. Open a new PowerShell tab and paste it. Press Enter.
Step 5 — Configure settings.json on Windows Open File Explorer and navigate to C:\Users\YourUsername\.claude\. Open or create settings.json and paste the same env configuration from above. Replace the placeholder with your actual API key and save.
Step 6 — Fix PATH Issues If claude isn't recognized open System Environment Variables, find Path under System variables, click Edit, add C:\Users\YourUsername\AppData\Roaming\npm, click OK and reopen PowerShell.
Step 7 — Run Claude Code in VS Code (Windows) Install VS Code if you haven't already. Open Extensions with Ctrl+Shift+X, search Claude, install the Claude Code for VS Code extension by Anthropic. Open a folder, click the Claude Code sidebar icon, click New Session, type /model and select Minimax M2.5 Free.
FAQ
Is Minimax M2.5 free forever? No official end date has been announced. It could be available for 1 month or longer. Use it while it's free and subscribe for updates.
Do I need a credit card? No. Just create an account, skip billing setup, and generate a free API key.
Can I use this with just VS Code without the terminal? No — the Claude Code CLI must be installed first. But once it's set up you can do all your coding inside VS Code.
Does this work on Linux? Yes. The Mac setup guide applies to Linux as well.
Is Minimax M2.5 as good as Claude Sonnet or Opus? Benchmarks show it performs at an Opus level making it comparable to or better than Claude Sonnet 4.x.
What is OpenCode? OpenCode is an open source CLI tool for AI assisted coding similar to Claude Code but not made by Anthropic. It supports multiple providers including OpenCode Zen where Minimax M2.5 is available for free.
Will my existing Claude Code settings be deleted? Only if you paste over the entire file. Carefully add only the env block inside your existing JSON.
Conclusion
You now have a fully working Claude Code free unlimited setup using OpenCode Zen and Minimax M2.5. No GPU, no Nvidia NIM, no Ollama, no paid subscription. Works on Mac, Linux, and Windows and runs both in the terminal and inside VS Code. Minimax M2.5 is not a downgrade — it benchmarks at Opus level and handles complex real world coding projects without the slowdowns or errors that have made other free methods frustrating to use. Set it up today while the free tier is still active.