You don’t need to pay for AI. Most major providers offer free tiers that are generous enough for side projects, prototyping, and even small production apps. Here’s every free AI API worth knowing about in 2026.
The ranking
| Provider | Free tier | Best model available | Rate limit | Verdict |
|---|---|---|---|---|
| 🥇 Google AI Studio | Unlimited (rate limited) | Gemini 3.5 Flash | 15 RPM | Best overall free tier |
| 🥈 DeepSeek | 5M tokens on signup | DeepSeek V3.2 | None | Best for coding |
| 🥉 Groq | 14,400 requests/day | Llama 4, Gemma 4 | 30 RPM | Fastest inference |
| 4 | Alibaba DashScope | 1M tokens/month | Qwen 3.5 Plus | 60 RPM |
| 5 | OpenRouter | $1 free credit | Any model | Varies |
| 6 | Hugging Face | Rate limited | Open models | 10 RPM |
| 7 | Mistral | Free tier | Mistral Large 2 | 5 RPM |
| 8 | Cohere | 1,000 requests/month | Command R+ | — |
#1: Google AI Studio
The most generous free tier in AI. Access to Gemini 3.5 Flash — Google’s newest frontier model that beats 3.1 Pro on coding and agentic benchmarks — with no token limit. The catch is rate limiting: 15 requests per minute, 1,500 per day.
import google.generativeai as genai
genai.configure(api_key="your-free-key")
model = genai.GenerativeModel("gemini-3.5-flash")
response = model.generate_content("Explain quantum computing")Get your key: aistudio.google.com/apikey
Best for: Prototyping, side projects, anything where 15 RPM is enough. The model quality rivals paid APIs.
If you prefer running Gemini locally instead, see our Gemma 4 setup guide — Google’s open models are completely free with no rate limits.
#2: DeepSeek
DeepSeek gives 5 million free tokens on signup — enough for weeks of development. Their V3.2 model is excellent for coding, and the pricing after the free tier is the cheapest in the industry ($0.28/M input tokens).
from openai import OpenAI
client = OpenAI(api_key="your-key", base_url="https://api.deepseek.com")
response = client.chat.completions.create(
model="deepseek-chat",
messages=[{"role": "user", "content": "Write a REST API in FastAPI"}]
)Get your key: platform.deepseek.com
Best for: Coding projects. DeepSeek V3 scores near the top on coding benchmarks and the free tier is substantial.
#3: Groq
Groq doesn’t make AI models — they make the hardware that runs them incredibly fast. Their free API serves open models (Llama 4, Gemma 4, Mistral) at speeds that feel instant: 500+ tokens per second.
from openai import OpenAI
client = OpenAI(api_key="your-key", base_url="https://api.groq.com/openai/v1")
response = client.chat.completions.create(
model="llama-4-scout",
messages=[{"role": "user", "content": "Hello!"}]
)Get your key: console.groq.com
Best for: Applications where response speed matters. The free tier is generous: 14,400 requests/day across multiple models.
#4: Alibaba DashScope
Access to Qwen 3.6 models including the powerful Plus variant. 1 million free tokens per month. Excellent for multilingual applications and coding.
Get your key: dashscope.aliyun.com
Best for: Multilingual apps, especially CJK languages. Also available via OpenRouter if you prefer a unified API.
For local use, see our Qwen 3.6 setup guide and API guide.
#5: OpenRouter
OpenRouter is a unified API that routes to 100+ models from different providers. You get $1 in free credits on signup — enough for thousands of requests with cheap models like DeepSeek or Qwen.
from openai import OpenAI
client = OpenAI(api_key="your-key", base_url="https://openrouter.ai/api/v1")
response = client.chat.completions.create(
model="deepseek/deepseek-chat", # or any of 100+ models
messages=[{"role": "user", "content": "Hello!"}]
)Get your key: openrouter.ai
Best for: Trying different models without signing up for each provider. One API key, all models.
#6: Hugging Face Inference API
Free access to thousands of open models hosted on Hugging Face. Rate limited but no token cap.
import requests
response = requests.post(
"https://api-inference.huggingface.co/models/google/gemma-4-26b",
headers={"Authorization": "Bearer your-token"},
json={"inputs": "Explain transformers in simple terms"}
)Get your token: huggingface.co/settings/tokens
Best for: Experimenting with niche or fine-tuned models. The selection is unmatched.
#7: Mistral
Mistral offers a free tier with access to Mistral Large 2 and Codestral. Rate limited to 5 RPM on the free plan.
Get your key: console.mistral.ai
Best for: European developers who want GDPR-friendly AI. Mistral is based in France.
#8: Cohere
Cohere’s free tier includes Command R+ and their embedding models. 1,000 requests per month. Their strength is RAG (Retrieval-Augmented Generation) with built-in web search.
Get your key: dashboard.cohere.com
Best for: Building search and RAG applications.
Free tier comparison table
| Provider | Tokens/month | RPM | Models | Signup |
|---|---|---|---|---|
| Google AI Studio | Unlimited | 15 | Gemini 2.5 Pro/Flash | Google account |
| DeepSeek | 5M (one-time) | No limit | V3.2, Reasoner | |
| Groq | ~50M+ | 30 | Llama 4, Gemma 4 | |
| DashScope | 1M | 60 | Qwen 3.5 family | Alibaba account |
| OpenRouter | ~$1 worth | Varies | 100+ models | |
| Hugging Face | Unlimited | 10 | Thousands | |
| Mistral | ~1M | 5 | Large 2, Codestral | |
| Cohere | 1K requests | — | Command R+ |
The free local alternative
All of these APIs have a completely free alternative: run the models locally with Ollama. No API key, no rate limits, no token caps, no data leaving your machine.
The tradeoff is hardware — you need a decent computer. But for models like Gemma 4 26B (8 GB RAM) or Qwen 3.6 (5 GB RAM), most modern laptops qualify.
See our local AI vs ChatGPT comparison and cheapest way to run AI locally for the full analysis.
Which free API should you start with?
Building a prototype: Google AI Studio — best model, simplest setup.
Coding project: DeepSeek — 5M free tokens, excellent code quality.
Need speed: Groq — fastest inference, generous limits.
Want flexibility: OpenRouter — one key, all models.
Privacy-first: Skip APIs entirely. Run locally with Ollama.
FAQ
What’s the best free AI API in 2026?
Google Gemini’s free tier is the most generous — it offers access to Gemini Flash with high rate limits. DeepSeek’s free tier provides strong coding and reasoning capabilities. Mistral’s free tier gives access to their smaller models with reasonable limits.
Are free AI APIs good enough for production?
For prototyping and low-traffic apps, yes. For production with real users, free tiers have rate limits and no SLA guarantees. Plan to migrate to paid tiers or self-hosted models once you validate your product. Free tiers are best for development and testing.
Can I build a startup on free AI APIs?
You can prototype and validate on free tiers, but don’t build production infrastructure on them. Rate limits, potential policy changes, and lack of SLA make them unreliable for paying customers. Use free tiers to prove your concept, then budget for paid API access or self-hosting.
Related: AI Coding Tools Pricing