free-ai-tools — Curated List of Practical AI Developer Tools

Main

• 把它当作选型 shortlist：先按预算/部署形态/数据政策筛掉不合适项，再做功能对比。

• 对落地的条目建议绑定 commit hash/tag，方便团队复盘与复现当时的决策依据。

• 选定 Provider 后，把 rate limit、定价假设与工具链接一起记录，避免后续成本/额度“踩雷”。

• 可基于清单构建内部“批准工具子集”，以满足组织的安全与合规要求。

README (excerpt)

Free AI Tools

Curated list of free LLM APIs, coding copilots, AI IDEs, agents, and infrastructure tools for building real AI applications.

What's Inside

• ✅ Free GPT-5 / Claude / Gemini API access
• 🤖 Coding copilots and AI-native IDEs (Cursor, Trae, Windsurf)
• 💰 Cheapest AI APIs ($0.10-0.50 per 1M tokens)
• 📚 RAG stack tools (vector DBs, embeddings, frameworks)
• 🎯 Agent frameworks and automation tools
• 🔒 Local models for privacy (Ollama, Llama, Qwen)
• 🏗️ Production-ready stack configurations

Goal: Help developers build AI apps without paying $200/month.

[!NOTE]
Please don't abuse these services, else we might lose them for everyone. The numebr becomes 550+ when you add all the models and sub services of all the tools provided. When raising issues or pull requests please dont add your own paid,expensive personal projets.

[!WARNING]
April 2026 Model Tier Changes: Major providers (OpenAI, Anthropic, Google) have restricted flagship models (GPT-5.4, Claude Opus 4.6, Gemini 3.1 Pro) to paid tiers. Free tiers now get lighter models (GPT-4o, Claude Sonnet/Haiku, Gemini Flash). Entries marked with [verify] need confirmation.

🎯 Why This Repo Exists

Most AI tool lists are:

• ❌ Outdated (prices/limits from 2023)
• ❌ Filled with affiliate links and sponsored placements
• ❌ General-purpose directories with no developer focus
• ❌ Missing production-critical details (rate limits, commercial use, architecture patterns)

This repo focuses only on:

• ✅ Tools developers actually use in production
• ✅ Generous free tiers (no "5 requests then paywall")
• ✅ Production-capable models (SWE-bench verified, not toys)
• ✅ Real infrastructure (APIs, hosting, vector DBs, not just chatbots)
• ✅ Minimal fluff, maximum utility

Unlike: awesome-ai (general list), ai-collection (marketing focus), toolify (affiliate-heavy)

Source-backed notes

• README 描述这是一个 AI 工具清单，覆盖 API、IDE、agent 与基础设施等类别。
• README 含多个分类与外链；可以用 rg 快速定位你关心的部分。
• 清单类内容建议逐项复核：真正采用前，请到每个工具的源页面确认许可证与定价/条款。

FAQ

• 每个工具都是免费的吗？：清单定位是免费/低价，但价格会变化；请以各工具官方信息为准。
• 团队怎么持续维护？：建议固定到某个 commit，并定期（每周/每月）review upstream 变更。
• 怎么快速评估？：先按硬性条件（区域/数据政策/是否自托管）筛选，再做细节对比。