免费 LLM API 合集：零成本开发你的第一个 AI 应用

What is Free LLM API Resources?

Free LLM API Resources is a curated collection of free Large Language Model inference APIs — allowing developers to build AI-powered applications without paying for API access. Maintained by the community, it tracks which providers offer free tiers, what models are available, and how to access them.

GitHub: https://github.com/cheahjs/free-llm-api-resources Stars: 20,310+ Language: Python License: CC0-1.0 (Public Domain)

The Problem: AI API Costs

Current Pricing (2026)

Problem: Building AI apps costs $50-500/month in API fees.

The Solution: Free Tiers

Featured Free Providers

1. Groq — Fastest Inference

Website: https://groq.com Free Tier: Completely free (rate limited) Speed: 800+ tokens/second Models:

• Llama 3 70B
• Llama 3 8B
• Mixtral 8x7B
• Gemma 7B

import requests

# Groq API (free tier)
response = requests.post(
    "https://api.groq.com/openai/v1/chat/completions",
    headers={"Authorization": "Bearer YOUR_FREE_API_KEY"},
    json={
        "model": "llama3-70b-8192",
        "messages": [{"role": "user", "content": "Hello!"}]
    }
)
print(response.json()["choices"][0]["message"]["content"])

2. Together AI — $5 Free Credit

Website: https://www.together.ai Free Tier: $5 credit for new accounts Models: 100+ open source models Features: Fine-tuning, embeddings

import openai

client = openai.OpenAI(
    api_key="YOUR_TOGETHER_API_KEY",
    base_url="https://api.together.xyz/v1"
)

response = client.chat.completions.create(
    model="meta-llama/Llama-3-70b-chat-hf",
    messages=[{"role": "user", "content": "Explain quantum computing"}]
)
print(response.choices[0].message.content)

3. Ollama — Run Locally

Website: https://ollama.com Cost: Completely free (runs on your hardware) Privacy: 100% private Models: Pull from Ollama library

# Install Ollama
curl -fsSL https://ollama.com/install.sh | sh

# Pull a model
ollama pull llama3

# Run API server
ollama serve

# Use the API
curl http://localhost:11434/api/generate -d '{
  "model": "llama3",
  "prompt": "Why is the sky blue?"
}'

4. LM Studio — GUI + API

Website: https://lmstudio.ai Cost: Free (local inference) Features: GUI model browser, API server Best for: Testing models, development

# LM Studio local API
import openai

client = openai.OpenAI(
    base_url="http://localhost:1234/v1",
    api_key="not-needed"
)

response = client.chat.completions.create(
    model="local-model",
    messages=[{"role": "user", "content": "Hello!"}]
)

5. Fireworks AI — Fast OSS Models

Website: https://fireworks.ai Free Tier: Trial credits Speed: Optimized inference Models: Llama, Mixtral, CodeLlama

Comparison Table

Use Cases

1. Development & Testing

• Prototype AI features
• Test prompts
• Build MVPs
• Learn LLM integration

2. Personal Projects

• Chatbots for personal use
• Content generation tools
• Code assistants
• Research assistants

3. Education

• Learn AI development
• Student projects
• Open source contributions
• Research experiments

4. Production (with care)

• Low-traffic applications
• Fallback providers
• Cost-sensitive projects
• Community tools

How to Choose

Decision Tree

Need API access?
├── Yes → Need high speed?
│   ├── Yes → Groq (fastest)
│   └── No → Together AI (most models)
├── No → Need privacy?
│   ├── Yes → Ollama/LM Studio (local)
│   └── No → Consider paid options

Rate Limits Matter

Community & Updates

How to Contribute

The repository is community-maintained:

1. Star the repo to support
2. Submit PRs for new providers
3. Report broken links
4. Share your experience

Stay Updated

• Watch the GitHub repo
• Check monthly for new providers
• Join discussions for tips
• Follow @cheahjs on GitHub

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• Free Claude Code: Open Source AI Coding — More free AI tools
• TabPFN: Foundation Model for Tabular Data — AI for data science
• OpenClaw 42 Use Cases — AI agent applications

Disclaimer: Free tiers have rate limits and may change. Always check the provider’s current terms. This is a community resource, not affiliated with any API provider.