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Find the best free LLM APIs for developers.

Compare free API keys for modern large language models across Google Gemini, Groq, NVIDIA NIM, OpenRouter, Mistral, and Cloudflare. Check daily request caps, credit card requirements, OpenAI SDK drop-in compatibility, and prompt privacy policies.

Provider
Tier
Free Limits & Quota
Credit Card
OpenAI Compatible
Prompt Privacy
Get Key
Cerebras Inference
gpt-oss-120bQwen 3.8 27BLlama 3.3 70B
Free Trial
$5 of credits for 30 days; 5 requests/min, 1M tokens/day per model
Yes (post-trial)Yes
Not stated
Get Key
Cloudflare Workers AI
gpt-oss-20bgpt-oss-120bLlama 3.1 8B Instruct+2 more
Ongoing Free Tier
10,000 Neurons a day on the Workers Free plan, reset at 00:00 UTC
NoYes
Not stated
Get Key
Cohere (trial key)
Command R+Command REmbed v3 English/Multilingual+1 more
Ongoing Free Tier
Trial key: 20 requests/min on chat, 1,000 API calls a month
NoCustom SDK
Not stated
Get Key
Google Gemini APITop Pick
Gemini 3.8 FlashGemini 3.1 Flash-LiteGemma 2+1 more
Ongoing Free Tier
Free input and output tokens on Flash models, with per-model RPM, TPM, and RPD limits shown in AI Studio
NoYes
Yes: free-tier prompts are used to improve Google products
Get Key
GroqTop Pick
gpt-oss-120bgpt-oss-20bQwen 3.8 27B+1 more
Ongoing Free Tier
30 requests/min, 1,000 requests/day, 8K tokens/min, 200K tokens/day on the main models
NoYes
No: inputs and outputs are not retained by default
Get Key
Mistral AI
Mistral SmallMistral MediumMistral Large 2+2 more
Ongoing Free Tier
Free mode with included monthly usage; exact limits shown after login in console
NoYes
Not stated for the free API
Get Key
NVIDIA API Catalog (NIM)Top Pick
DeepSeek V4.1 FlashNemotron 70BLlama 3.3 70B+2 more
Ongoing Free Tier
Free hosted endpoints with a free NVIDIA Developer Program account; generous prototyping limits
NoYes
Not stated
Get Key
Ollama
DeepSeek R1Llama 3.3Qwen 2.5 Coder+2 more
Local / Self-Hosted
Unlimited on your own hardware; free account adds small cloud usage on starter models
NoYes
No: runs locally; Ollama says cloud prompts are not logged or trained on
Get Key
OpenRouter (free models)
meta-llama/llama-3.3-70b-instruct:freedeepseek/deepseek-r1:freegoogle/gemini-2.0-flash-exp:free
Ongoing Free Tier
20 requests/min; 50 requests/day, or 1,000/day once you have bought $10 of credits
NoYes
Depends on the upstream provider of each free model
Get Key
SambaNova Cloud
DeepSeek V3Llama 3.3 70Bgpt-oss-120b
Ongoing Free Tier
20 requests/min, 20 requests/day and 200K tokens/day per model, with no card linked
NoYes
Not stated
Get Key

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