Free API keys for big AI models (build.nvidia.com)

What this is

A free, step-by-step template from Taha's reels — the exact tools, prompts and links, laid out so you can follow along and ship. Comment the keyword on the reel and it also lands in your DMs.

Hey! 👋 Here's what I promised you — with one correction first:

In the reel I mentioned Kimi — at the time of writing, Kimi is not in the build.nvidia.com catalog. DeepSeek, GLM, MiniMax and an OpenAI model are there, with a free endpoint.

build.nvidia.com is NVIDIA's model catalog: pick a model, generate one free API key, and call dozens of models from the same place — for coding, writing, images or reasoning.

🔗build.nvidia.comhttps://build.nvidia.com 🔗Model cataloghttps://build.nvidia.com/models

Models with a free endpoint (at the time of writing)

🔗DeepSeek V4.1 Flashhttps://build.nvidia.com/deepseek-ai/deepseek-v4.1-flash 🔗GLM-5.3 (Z.ai)https://build.nvidia.com/z-ai/glm-5-3 🔗MiniMax M3.1 Flashhttps://build.nvidia.com/minimaxai/minimax-m3.1-flash 🔗gpt-oss-20b (OpenAI) — OpenAI's open-weight model — not ChatGPThttps://build.nvidia.com/openai/gpt-oss-20b

Setup

Open a model page and click Get API Key — you sign in with a free NVIDIA Developer account.
Copy the key and keep it private (never put it in public code or a public repo).
Use it in any tool that accepts an OpenAI-compatible API, with this base URL:

https://integrate.api.nvidia.com/v1

Each model page also has ready-made setup for coding agents (OpenCode, Codex, Claude Code…) with the exact model ID.

Claude Code: NVIDIA's own setup says Claude Code needs an Anthropic-compatible gateway in between — it's not plug-and-play. OpenCode connects directly.

Free = for prototyping. At the time of writing the free endpoints allow up to 40 requests per minute and 10,000 per day, limits vary by model, and shared traffic can slow them down. The free API runs under NVIDIA's API Trial terms; for production NVIDIA points you to dedicated NIM deployments.

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