Free LLM API for Developers - Build Chatbots Without Cost

Access powerful AI models for free. Perfect for prototyping, learning, and building chatbots with zero API costs.

Last updated: December 29, 202520 models availableFree access

Free LLM Models Comparison

Compare capabilities and features across different free LLM models. Resource: Openrouter

Free LLM Models Comparison
Model NameInput TypesOutput Types
Deepseek
Deepseek: Deepseek R1 0528:Free
163.8KTextText
Google
Google: Gemini 2.0 Flash Exp:Free
1.0MText, ImageText
Google
Google: Gemma 3 12b It:Free
32.8KText, ImageText
Google
Google: Gemma 3 27b It:Free
131.1KText, ImageText
Google
Google: Gemma 3 4b It:Free
32.8KText, ImageText
Google
Google: Gemma 3n E2b It:Free
8.2KTextText
Google
Google: Gemma 3n E4b It:Free
8.2KTextText
Meta
Meta: Llama 3.1 405b Instruct:Free
131.1KTextText
Meta
Meta: Llama 3.2 3b Instruct:Free
131.1KTextText
Meta
Meta: Llama 3.3 70b Instruct:Free
131.1KTextText
Mistral
Mistral: Devstral 2512:Free
262.1KTextText
Mistral
Mistral: Mistral 7b Instruct:Free
32.8KTextText
Mistral
Mistral: Mistral Small 3.1 24b Instruct:Free
128.0KText, ImageText
Moonshotai
Moonshotai: Kimi K2:Free
32.8KTextText
Openai
Openai: Gpt Oss 120b:Free
131.1KTextText
Openai
Openai: Gpt Oss 20b:Free
131.1KTextText
Qwen
Qwen: Qwen 2.5 Vl 7b Instruct:Free
32.8KText, ImageText
Qwen
Qwen: Qwen3 4b:Free
41.0KTextText
Qwen
Qwen: Qwen3 Coder:Free
262.0KTextText
Z-ai
Z-ai: Glm 4.5 Air:Free
131.1KTextText

Start Building Today

Ready to add AI capabilities to your project? Use our financial sandbox to plan your costs.

    Free LLM API for Developers - Build AI Chatbots Without Cost | Muon