Unlock Free AI Tokens in 2026: The Ultimate Guide to Zero‑Cost LLM APIs

1. Domestic Platforms: Local Advantage, No Magic Required

For developers in China, low latency, no VPN ("magic"), and strong Chinese language understanding are the primary concerns. The following domestic services offer generous permanent or long‑term free token quotas.

1. Zhipu AI – Permanent Large Quota

Free quota details:

New users receive 20 000 000 tokens (permanent).

Model GLM‑4‑Flash is free and unlimited.

Additional models: GLM‑5, GLM‑4.7, GLM‑4.6 (including optimized versions).

Concurrency limit: 30 simultaneous requests.

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_ZHIPU_API_KEY",
    base_url="https://open.bigmodel.cn/api/paas/v4/"
)

response = client.chat.completions.create(
    model="glm-4-flash",
    messages=[{"role": "user", "content": "Hello"}]
)

Recommendation: GLM‑4‑Flash is the most reliable free domestic backend for long‑term use.

2. SiliconFlow – Fast Model Updates, Free Tier

SiliconFlow aggregates third‑party models and, after a partnership with Huawei Cloud, offers strong performance for DeepSeek series.

New users receive 20–30 000 000 tokens (permanent).

Free models include Qwen3‑8B, DeepSeek‑R1‑7B and others.

Supported models: DeepSeek‑V3/R1, Qwen2.5‑72B, Kimi‑K2.5, Llama series, etc.

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_SILICONFLOW_API_KEY",
    base_url="https://api.siliconflow.cn/v1"
)

response = client.chat.completions.create(
    model="Qwen/Qwen2.5-7B-Instruct",
    messages=[{"role": "user", "content": "Write a poem about autumn"}]
)

3. Alibaba Cloud Bailei – Most Model Coverage

New users receive 1 000 000 tokens per model, valid for 90 days.

Supported models: Tongyi Qianwen series, DeepSeek‑R1/V3.2, Kimi‑K2‑Thinking, MiniMax‑M2.7, GLM‑4.6v, etc.

Rate limiting: QPS throttling (typically 1–2 requests per second).

4. Volcano Engine (Doubao) – Daily Refresh

Daily free quota: 2 000 000 tokens (reset at 00:00, not cumulative).

Base quota per model: 500 000 tokens.

Main models: Doubao‑Seed‑2.0 Pro, Doubao‑Lite, DeepSeek‑R1, etc.

5. Baidu Qianfan – Stable Legacy Platform

New users receive 1 000 000 tokens per model, valid for 3 months.

Supported models: ERNIE‑4.5‑Turbo, ERNIE‑X1‑Turbo, Qwen3‑30B, DeepSeek‑V3.1, Kimi‑K2, etc.

ERNIE‑Speed/Lite are permanently free.

6. Tencent Hunyuan – Long‑Term Free Quota

100 0000 general tokens + 1 000 000 embedding tokens, valid for 1 year.

Lite versions (Hunyuan‑translation, Hunyuan‑large‑role) are permanently free and unlimited.

Main models: Hunyuan‑T1, Hunyuan‑TurboS and nine other core models.

7. Moonshot Kimi – Ultra‑Long Context

New users receive about 8 000 000 tokens.

Supported models: Kimi‑K2.5, Kimi‑1.5, etc.

Rate limit: 3 RPM (requests per minute).

8. ModelScope – Alibaba Open‑Source Community

Free calls: 2 000 requests per day.

Supported models: full Qwen series, multimodal models, etc.

Deep inference versions (e.g., R1) limited to 20 calls per day.

2. International Platforms: Top‑Tier Models, Rich Quotas

When network conditions allow, overseas services also provide abundant free allocations, often with leading model capabilities.

1. Google AI Studio (Gemini) – Highest Daily Calls

Gemini 2.5 Flash: 30 RPM / 1 440 requests per day.

Gemini 1.5 Flash: 15 RPM.

Daily free token allowance: 1 000 000 tokens.

import google.generativeai as genai

genai.configure(api_key="YOUR_GOOGLE_AI_API_KEY")
model = genai.GenerativeModel('gemini-2.0-flash')
response = model.generate_content('Hello')

Note: Access requires VPN or other network workarounds.

2. GitHub Models – Lowest Barrier for Developers

Free quota: 15 RPM / 150 requests per day.

Supported models: GPT‑4.1, GPT‑4.1‑mini, GPT‑4o.

Recommendation: Ideal for developers who already have a GitHub account.

3. Groq – Speed King with LPU Acceleration

Daily free requests: 1 000.

Token throughput: 6 000 tokens per minute.

Supported models: Llama series, DeepSeek and other open‑source models.

Best choice for real‑time or streaming applications that need the fastest inference.

4. OpenRouter – Most Model Aggregator

Free requests: 50 per day.

Free models include DeepSeek‑R1, Llama 4, Qwen3, Gemini Flash, etc.

Paid upgrade (≥ $10) unlocks 1 000 requests per day.

from openai import OpenAI

client = OpenAI(
    api_key="sk-or-v1-YOUR_OPENROUTER_KEY",
    base_url="https://openrouter.ai/api/v1"
)

response = client.chat.completions.create(
    model="deepseek/deepseek-r1:free",
    messages=[{"role": "user", "content": "Hello"}]
)

5. HuggingFace – Open‑Source Model Hub

Inference API free tier (rate‑limited).

Inference Endpoints: ~100 credits per month (1 credit ≈ 1 K tokens).

Supports LLMs, embeddings, images, audio; global edge nodes.

Note: Access may require VPN.

6. NVIDIA NIM – Enterprise‑Grade Free Credits

New users receive 1 000 credits (valid 12 months; 1 credit ≈ 1 K tokens).

Supported models: Mistral series, Llama series, etc.

7. Cloudflare Workers AI – Global Low‑Latency Edge

Free requests: 50 per day (upgrade with 10 credits for 1 000 per day).

Models: Llama 3.1, Mistral, etc.

3. Third‑Party Channels: Lower Prices, Domestic Direct Access

1. Qiniu Cloud AI API – Established Cloud Provider

New users receive 3 000 000 free tokens.

Supports both OpenAI‑compatible and Anthropic interfaces.

Can configure tools such as Claude Code, Cursor, Windsurf.

2. SiliconFlow × Huawei Cloud – Domestic Compute Power

Inference speed 2.3× faster than leading AI clouds.

Latency reduced by 32 %.

Stable domestic access.

4. Free Quota Comparison Overview

The chart shows that Google AI Studio Gemini 2.5 Flash and ModelScope lead in daily request count, Zhipu AI provides the largest token pool, Groq offers the fastest inference, HuggingFace and OpenRouter have the richest model catalogs, and Zhipu AI and SiliconFlow have the longest‑lasting free quotas.

5. Choosing the Right API by Scenario

Learning & Testing

Preferred: GitHub Models – low barrier, 150 requests/day, high‑quality GPT‑4.1/4o.

Domestic Project Development (China)

Preferred: OpenRouter, SiliconFlow, Zhipu AI – no VPN, low latency, strong Chinese language support.

High‑Speed Real‑Time Inference

Preferred: Groq – LPU hardware acceleration, fastest publicly available service.

Very Long Text Processing

Preferred: Zhipu AI (256 K context) and Kimi (262 K context) – unlimited free tokens for long‑context models.

Multimodal (Image‑Text) Tasks

Preferred: Google AI Studio Gemini – strongest multimodal capabilities, 1 440 free daily calls.

Best Cost‑Performance

Preferred: Combination of Zhipu AI and SiliconFlow – permanent free quotas approaching 100 million tokens, strong Chinese understanding.

6. Recommended "Free‑Only" Workflow (2026 Edition)

Base Setup (Register First)

SiliconFlow → acquire 30 000 000 tokens (core backbone).

Zhipu AI → acquire 20 000 000 tokens (permanent safety net).

Alibaba Cloud Bailei → 1 000 000 tokens per model for multi‑model testing.

Daily Use

Lightweight tasks: permanently free models (GLM‑4‑Flash, Wenxin Speed, Hunyuan Lite).

Development & testing: leverage new‑user large quotas.

Scheduled jobs: Volcano Engine’s daily 2 000 000 token allowance.

Fallback Options

Groq – ultra‑fast inference backup.

OpenRouter – model‑switching backup.

Google AI Studio – multimodal backup (requires VPN).

7. Six Precautions Before Using Free APIs

1. Handle Rate Limits with Exponential Backoff

Almost all free APIs impose RPM (requests per minute) and RPD (requests per day) limits. Implement exponential‑backoff retry logic to automatically pause and retry after a 429 error.

import time
from openai import RateLimitError

def safe_call(client, model, messages, max_retries=3):
    for i in range(max_retries):
        try:
            return client.chat.completions.create(model=model, messages=messages)
        except RateLimitError:
            time.sleep(min(2 ** i, 30))  # exponential backoff
    return None

2. Verify Network Access for International Platforms

Google AI Studio, HuggingFace, Groq and similar services require VPN or other network workarounds when accessed from mainland China.

3. Free Policies May Change

The quota data reflects the state as of March 2026; providers can modify limits at any time. Always confirm the latest terms on the official website before production use.

4. Use Paid Plans for Production

Free tiers are suitable for development, testing, and learning. Production workloads need paid plans for SLA guarantees, priority queuing, and technical support.

5. Combine Multiple Platforms to Mitigate Risk

Relying on a single provider makes you vulnerable to outages or policy changes. Adopt a multi‑platform fallback strategy, e.g., primary use of Zhipu GLM, secondary SiliconFlow or OpenRouter.

6. Secure API Keys

Leaked keys allow others to consume your free quota (or incur charges). Never hard‑code keys in source files or push them to public repositories; use environment variables or secret‑management services instead.

Conclusion

By mid‑2026 the free large‑model API ecosystem is mature enough that developers can assemble a near‑billion‑token quota simply by registering on the listed platforms. The key is to combine multiple services, respect rate limits, and keep keys secure, thereby eliminating token‑cost anxiety for most non‑production workloads.