Llama-Stack

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OGX (formerly llama-stack) is an open-source agentic API server for building AI applications, offering OpenAI compatibility. It allows developers to use any model and infrastructure, acting as a drop-in replacement for the OpenAI API.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is llama-stack?

OGX, previously known as llama-stack, is an open-source agentic API server designed for building AI applications with maximum flexibility. It serves as a drop-in replacement for the OpenAI API, enabling developers to use any OpenAI-compatible client or agentic framework. OGX supports various models like Llama, GPT, Gemini, and Mistral, and can be deployed on diverse infrastructures, from local development with Ollama to production with vLLM or managed services. Key features include Chat Completions & Embeddings, a Responses API for server-side agentic orchestration with tool calling and file search, and support for Vector Stores & Files. It also offers multi-SDK compatibility, working natively with Anthropic and Google GenAI SDKs alongside OpenAI.

Best used for

Ideal for developers who need to build flexible AI applications, integrate various large language models, and deploy them across diverse infrastructures. Especially valuable for those looking for an OpenAI API-compatible solution that offers model and infrastructure agnosticism, simplifying the development and deployment of agentic AI systems.

Common actions

build AI applications

integrate AI models

deploy AI infrastructure

orchestrate AI agents

"AI Agents"github copilotdeepfakelow-code/no-codeopen-sourceautomated workflowcollaborationface swappingworkflows

Capabilities

Key features

OpenAI API compatible
Agentic API server
Supports multiple AI models
Pluggable provider architecture
Chat Completions & Embeddings
Responses API orchestration
Vector Stores & Files

Target Audience

developerdata scientiststartup founder

Integrations

openaianthropicgoogle-genaiollamavllm

Pricing & Plans

Open Source

Free

FAQs

What is the primary benefit of using OGX over the standard OpenAI API?

OGX acts as a drop-in replacement for the OpenAI API but offers model and infrastructure agnosticism. This means you can swap between different LLMs like Llama, GPT, or Gemini and deploy on various infrastructures (local, datacenter, cloud) without altering your application code, providing greater flexibility and control.

Does OGX support other AI SDKs besides OpenAI?

Yes, OGX provides multi-SDK support. Alongside its OpenAI API compatibility, it natively supports the Anthropic SDK for `/v1/messages` and the Google GenAI SDK for `/v1alpha/interactions`, allowing developers to integrate with a wider range of AI services.

What kind of agentic capabilities does OGX offer?

OGX includes a Responses API that enables server-side agentic orchestration. This API supports tool calling, MCP server integration, and built-in file search (RAG) within a single API call. It also passes the Open Responses conformance test suite, ensuring robust agentic functionality.

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Subcategories trending in AI Agents & Automation

Chatbots & Conversational AI General-Purpose Agents Workflow Agents Personal Assistants RAG & Document AI Voice Agents

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Coding & Development › Open Source & Models

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