OpenRouter logo How to Get a Free OpenRouter API Key (2026)

27 free models available — no credit card required. Get your OpenRouter API key → Test free models →

OpenRouter FreeLLM Score

91
FreeLLM's Pick — Best for easy signup

Exceptional value with top-tier models and generous limits. Highly recommended.

🎁
Generosity Free limits
50/100
🌍
Accessibility Signup ease
100/100
📚
Breadth Model variety
100/100
Reliability Uptime
95/100
🔌
Compatibility Tool support
100/100
🧠
Quality Benchmarks
100/100

How we score →

What is OpenRouter?

Single API key for 300+ models from every major lab.

OpenRouter is a unified API gateway that routes requests to models from OpenAI, Anthropic, Google, Meta, Mistral, and dozens of other providers. With a single API key and one base URL, developers can switch between models without changing code. The free tier (marked :free) offers 200 requests/day — or 1,000/day with a $10 lifetime top-up.

  • 35+ permanently free models
  • OpenAI-compatible endpoint
  • 200 RPD free, 1,000 RPD with $10 lifetime credit
  • One key for 300+ models

API Compatibility: OpenAI SDK-compatible (Chat Completions)

How to Get a OpenRouter API Key

  1. 1
    Sign up at openrouter.ai No credit card. $10 lifetime top-up for 5× more rate limits.
  2. 2
    Go to Keys page
  3. 3
    Create a new API key
  4. 4
    Find free models Look for :free suffix in model name, or browse our list below.
  5. 5
    Configure OpenAI client Base URL: https://openrouter.ai/api/v1

All Free OpenRouter Models — Context Windows & Rate Limits

Model Context Max Output Modality Rate Limit Released Status
NVIDIA: Nemotron 3 Ultra (free) 1.0M 66K text 200 req/day (free tier) Jun 4, 2026 Online
Cohere: North Mini Code (free) 256K 64K textcode 200 req/day (free tier) Jun 9, 2026 Online
Nex AGI: Nex-N2-Pro (free) 262K 262K textimage 200 req/day (free tier) Jun 8, 2026 Online
Google: Gemma 4 31B (free) 262K 8K textimage 200 req/day (free tier) Apr 2, 2026 Online
Google: Gemma 4 26B A4B (free) 262K 33K textimage 200 req/day (free tier) Apr 2, 2026 Online
NVIDIA: Nemotron 3 Nano Omni (free) 256K 66K textimageaudioreasoning 200 req/day (free tier) Apr 28, 2026 Online
NVIDIA: Nemotron 3 Super (free) 1.0M 262K text 200 req/day (free tier) Mar 11, 2026 Online
Owl Alpha 1.0M 262K text 200 req/day (free tier) Apr 28, 2026 Online
Poolside: Laguna XS.2 (free) 262K 33K text 200 req/day (free tier) Apr 28, 2026 Online
Poolside: Laguna M.1 (free) 262K 33K text 200 req/day (free tier) Apr 28, 2026 Online
OpenAI: gpt-oss-120b (free) 131K 131K text 200 req/day (free tier) Aug 5, 2025 Online
NVIDIA: Nemotron 3 Nano 30B A3B (free) 256K 8K text 200 req/day (free tier) Dec 14, 2025 Online
Qwen: Qwen3 Coder 480B A35B (free) 1.0M 262K textcode 200 req/day (free tier) Jul 23, 2025 Online
OpenAI: gpt-oss-20b (free) 131K 33K text 200 req/day (free tier) Aug 5, 2025 Online
Nous: Hermes 3 405B Instruct (free) 131K 8K text 200 req/day (free tier) Aug 16, 2024 Online
NVIDIA: Nemotron 3.5 Content Safety (free) 128K 8K textimage 200 req/day (free tier) Jun 4, 2026 Online
Google: Lyria 3 Pro Preview 1.0M 66K textimage 200 req/day (free tier) Mar 30, 2026 Online
Google: Lyria 3 Clip Preview 1.0M 66K textimage 200 req/day (free tier) Mar 30, 2026 Online
Qwen: Qwen3 Next 80B A3B Instruct (free) 262K 8K text 200 req/day (free tier) Sep 11, 2025 Online
NVIDIA: Nemotron Nano 12B 2 VL (free) 128K 128K textimage 200 req/day (free tier) Oct 28, 2025 Online
LiquidAI: LFM2.5-1.2B-Thinking (free) 33K 8K textreasoning 200 req/day (free tier) Jan 20, 2026 Online
Venice: Uncensored (free) 33K 8K text 200 req/day (free tier) Jul 9, 2025 Online
NVIDIA: Nemotron Nano 9B V2 (free) 128K 8K text 200 req/day (free tier) Sep 5, 2025 Online
LiquidAI: LFM2.5-1.2B-Instruct (free) 33K 8K text 200 req/day (free tier) Jan 5, 2026 Online
Meta: Llama 3.3 70B Instruct (free) 131K 8K text 200 req/day (free tier) Dec 6, 2024 Online
Free Models Router 200K 8K textimage 200 req/day (free tier) Feb 1, 2026 Online
Meta: Llama 3.2 3B Instruct (free) 131K 8K text 200 req/day (free tier) Sep 25, 2024 Online

OpenRouter Free Tier Limits & Pricing

Credit Card Not required
Free Tier Permanently free
Context Range 33K – 1.0M
Total Models 27 free
Rate Limits 200 req/day (free tier)
API Compatibility OpenAI SDK-compatible (Chat Completions)

OpenRouter API Setup Tutorial & Tools

OpenRouter is fully compatible with popular AI coding assistants like Cursor, Claude Code, and more. To see step-by-step API configuration instructions for your favorite tool, please visit our Global Configuration Guide →

Use Cases

What OpenRouter's free models are best for, based on aggregated model capabilities:

Chat 27 models Reasoning 8 models Coding 4 models Vision 1 model

Limitations & Caveats

  • 200 RPD on free tier (1,000 with $10 lifetime credit)
  • Free models may change without notice
  • Some free models have shorter context windows than paid variants

Frequently Asked Questions

What happens when I hit the 200 RPD limit on OpenRouter?

You'll get a 429 rate limit error. You can either wait for the daily reset (midnight UTC) or make a one-time $10 lifetime top-up to get 1,000 RPD permanently.

Do free models on OpenRouter cost anything?

No — models marked with :free in their ID are completely free to use within the rate limit. OpenRouter subsidizes free models through paid model margins.

Can I use OpenRouter with Claude Code?

Yes. Set ANTHROPIC_BASE_URL to https://openrouter.ai/api and your OpenRouter API key. Claude Code will route through OpenRouter. Note: free models won't work for Claude Code as it requires Anthropic Claude models specifically.

See our FAQ for common questions about free LLM APIs