
CLIProxyAPI

CLIProxyAPI is an OpenAI/Gemini/Claude/Codex compatible API service. Unify multiple protocols into one. Fast, lightweight, MIT licensed. Access all major AI models with a single protocol.
Editor's Verdict
Key Takeaways
- Multi-Model Support
- All Protocols
- Unified Protocol
- Fast and Lightweight
In-Depth Review: What is CLIProxyAPI?
CLIProxyAPI is a powerful, open-source API gateway that provides a unified interface to leading AI models from OpenAI, Google, Anthropic, and more. By supporting all major protocols (Chat Completions, Gemini, Claude, Codex), it lets you use a single protocol to access every model. Built for speed and efficiency, CLIProxyAPI is lightweight and easy to deploy. It's the perfect solution for developers who want to switch between models without changing code, all under the permissive MIT License.
Core Features
Multi-Model Support
Compatible with OpenAI, Gemini, Claude, and Codex APIs, allowing access to multiple AI models through a single service.
All Protocols
Supports all major protocols including Chat Completions, Response, Gemini, and Claude, ensuring broad compatibility.
Unified Protocol
Use a single protocol to access all supported models, simplifying integration and reducing complexity.
Fast and Lightweight
Designed for high performance with minimal overhead, ensuring quick response times.
Open Source
Released under the MIT License, allowing free use, modification, and distribution.
Pricing
Free
- Multi-model support (OpenAI, Gemini, Claude, Codex)
- All protocols
- Single unified protocol
- Fast and lightweight performance
- MIT License
Pros and Cons
Pros
- Wide Model CompatibilitySupports multiple major AI models and protocols, reducing vendor lock-in.
- Simplified IntegrationA single protocol to access all models, making API integration straightforward.
- High PerformanceFast and lightweight, suitable for production environments.
- Open SourceFree to use and modify under MIT License, fostering community contributions.
- Future-proofDesigned to support emerging protocols and models.
Cons
- New ProjectRelatively new with potentially limited community and documentation.
- Requires Self-hostingUsers may need to deploy and manage their own infrastructure.
- Limited DocumentationAs a new open-source project, documentation may be sparse.
- Potential Compatibility IssuesMay not fully support all features of each model or protocol.
- No Official SupportCommunity-driven support only, no dedicated customer service.
Use Cases & Recommended Professions
AI Developer→ View Toolkit
Needs to integrate multiple AI models into applications without managing separate APIs.
Backend Engineer→ View Toolkit
Builds APIs that consume AI services and requires a unified interface for different models.
Data Scientist→ View Toolkit
Experiments with various AI models and needs a simple way to switch between them.
Full-Stack Developer→ View Toolkit
Implements AI features in web apps and benefits from a single protocol.
DevOps Engineer→ View Toolkit
Manages AI service proxies and seeks a lightweight, fast solution.
Product Manager→ View Toolkit
Evaluates AI service options and prefers a flexible, open-source proxy.
Frequently Asked Questions
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View Detailed Comparison →ℹ️ Curation Disclosure: The overview and features of CLIProxyAPI were synthesized using AI and fact-checked by our curation team to ensure accuracy.












