Free AI API Access

Access production-grade AI models for free or near-zero cost through Token1.US. GLM-4-Flash is completely free, and DeepSeek-V3 costs just $0.14 per million tokens. No vendor lock-in, 100% OpenAI-compatible.

Get Free API Access

Free and Near-Free AI Models

ModelInput PriceOutput PriceContextBest For
GLM-4-FlashFREEFREE128KPrototyping, testing, low-volume apps
DeepSeek-V3$0.14/1M$0.28/1M128KProduction coding, reasoning (94% cheaper than GPT-4o)
GPT-4o-mini$0.15/1M$0.60/1M128KCheapest OpenAI model, versatile tasks
GLM-4-Plus$0.70/1M$0.70/1M128KBilingual EN/CN, flat pricing
Cost comparison: Processing 1 million tokens with GLM-4-Flash costs $0. With GPT-4o directly from OpenAI, the same costs $2.50-$10.00. With DeepSeek-V3 on Token1.US, it costs $0.14-$0.28.

How to Access the Free AI API

Step 1: Sign Up

Create a free account at Token1.US. No credit card required for the free tier.

Step 2: Generate an API Key

Navigate to the API keys section and generate a new key. Your key starts with sk-.

Step 3: Make Your First Request

from openai import OpenAI

client = OpenAI(
    api_key="sk-your-key",
    base_url="https://discount-token.com/v1"
)

response = client.chat.completions.create(
    model="glm-4-flash",  # FREE model
    messages=[{"role": "user", "content": "Explain quantum computing simply"}]
)

print(response.choices[0].message.content)

Step 4: Switch Models Anytime

When you need higher quality, simply change the model name. No code restructuring needed:

# Free tier
model = "glm-4-flash"

# Near-free, high quality
model = "deepseek-chat"  # DeepSeek-V3, $0.14/1M

# Premium (when needed)
model = "gpt-4o"

What Can You Build with the Free Tier?

Prototyping and Proof of Concepts

GLM-4-Flash provides enough quality for chatbots, text classification, simple question answering, and content generation prototypes. Test your ideas without spending a cent.

Development and Testing

Use the free tier during development. When you move to production, switch to DeepSeek-V3 for high quality at $0.14/1M tokens. A typical application processing 100K tokens/day costs about $0.014/day.

Educational Projects

Students and learners can experiment with real AI APIs at zero cost. The OpenAI-compatible format means skills transfer directly to commercial AI development.

Low-Volume Production Apps

For applications with fewer than 1,000 requests per day, the free tier may cover all your needs. For higher volume, DeepSeek-V3 keeps costs negligible.

Free AI API vs Paid Models: When to Upgrade

Use CaseRecommended ModelMonthly Cost (est.)
Learning / prototypingGLM-4-Flash (Free)$0
Chatbot (1K msgs/day)DeepSeek-V3$2-5
Content generation (10K articles)DeepSeek-V3$5-15
Code assistant (IDE plugin)DeepSeek-V3 + GPT-4o$10-30
Enterprise (100K+ requests/day)GPT-4o + Claude$200+

Why Token1.US for Free AI API Access?

Frequently Asked Questions

Is the free AI API really free?

Yes. GLM-4-Flash on Token1.US is completely free for basic usage. There are no hidden charges, no trial period, and no credit card required. The free tier has rate limits to ensure fair usage across all users.

What are the rate limits for the free tier?

The free tier includes 60 requests per minute and 100K tokens per minute. For most development and testing purposes, this is more than sufficient. If you need higher limits, you can upgrade to paid models starting at $0.14/1M tokens.

Can I use the free API for commercial projects?

Yes. There are no restrictions on commercial use. However, for production applications with significant traffic, we recommend DeepSeek-V3 at $0.14/1M tokens for better performance and reliability.

How does this compare to OpenAI's free tier?

OpenAI does not offer a permanent free tier for GPT-4o. Token1.US provides GLM-4-Flash free indefinitely, plus access to DeepSeek-V3 at 94% lower cost than GPT-4o. The API format is identical to OpenAI's.

What happens if I exceed the free tier limits?

Your requests will receive a 429 rate limit response. You can either wait and retry, or upgrade to a paid model. There are no surprise charges - you only pay when you explicitly choose a paid model and add funds.

Start Building for Free