yangmao.ai · daily-updated AI free tier database
ChatGPT (OpenAI) Open Source Alternatives
When privacy, local deployment, or customization matters, ChatGPT (OpenAI) is not the only path. This page highlights open and low-cost alternatives.
Quick verdict
- Free tier: Limited requests/day
- Free API trial: no confirmed free API
- Access: relay or proxy may be needed
- Best for: chat / coding / reasoning / image / agent
Models and limits
| Model | Context | Limit | Notes |
|---|---|---|---|
| GPT-5.5 | 1000k | Plus/Pro only | Released April 2026, smartest model, major upgrade for coding/research/analysis. API $5/M input, $30/M output |
| GPT-5.5-Cyber | 1000k | Trusted Access / enterprise-limited | GPT-5.5 variant for trusted-access cybersecurity use cases, including security evaluation, vulnerability analysis, and defensive workflows; availability is gated through OpenAI trusted access. |
| GPT-5.5 Pro | 1050k | Pro only | Deep reasoning variant for complex high-stakes tasks. API $30/M input, $180/M output |
| GPT-5.4 | 128k | Plus/Pro | Previous flagship, still powerful |
| GPT-4o mini | 128k | Rate limited | Available to free users, fast |
| GPT-4o | 128k | Very limited | Very limited for free users |
Free API credits
Not confirmed
No confirmed free API credits in the current data.
API requires payment, no free tier. Codex (cloud coding agent) now available for enterprises.
Access notes
Proxy may be needed
Requires proxy in China. Recommend API relay services or self-hosted Cloudflare Workers proxy.
Want one key for multiple model providers? openllmapi.com can aggregate compatible APIs.
Recommended path
Start from the main ChatGPT (OpenAI) profile and confirm whether it fits your task.
If you only want to test it, use the free web product before upgrading.
Run one or two real tasks before paying or switching providers.
If access is unstable, compare relay options or local alternatives.
Related deals
Alternatives
FAQ
Does ChatGPT (OpenAI) have a free tier?
Yes. Current record: Limited requests/day. Always confirm on the official site before relying on it.
Can I try the ChatGPT (OpenAI) API for free?
No confirmed free API in our current data.
Can I use ChatGPT (OpenAI) without a credit card?
You can usually try free product features first, but card requirements may change on signup.
What are good ChatGPT (OpenAI) alternatives?
Check the alternatives section below or open the ChatGPT (OpenAI) alternatives page.