ChatMock

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ChatMock is a Coding & Development tool that provides an OpenAI & Ollama compatible API powered by Codex. It allows developers to use OpenAI models through a local server, enabling integration with various chat apps and coding tools.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is ChatMock?

ChatMock offers an OpenAI and Ollama compatible API, powered by Codex, designed to integrate OpenAI models into your favorite chat applications and coding environments. By running a local server, it allows programmatic access to OpenAI models using an authenticated ChatGPT login. This tool supports various models like gpt-5.4, gpt-5.2, and codex-mini, and includes features such as tool/function calling, vision/image input, thinking summaries, and web search capabilities. Developers can configure reasoning effort, summary verbosity, and expose reasoning levels as separate models, providing flexibility for different use cases. It's an ideal solution for developers looking to leverage OpenAI's power within their existing workflows.

Best used for

Ideal for developers who need to integrate OpenAI and Ollama compatible APIs into their projects, leverage advanced AI features like tool calling and vision input, and customize AI reasoning behavior. Especially valuable for those building applications that require flexible and powerful AI model access.

Common actions

integrate AI models

develop AI applications

access OpenAI API

configure AI behavior

workflowsdeepfakeautomated workflowopen-sourcecollaborationlow-code/no-code"AI Agents"github copilotface swapping

Capabilities

Key features

OpenAI compatible API
Ollama compatible API
Tool/function calling
Vision/image input
Web search tool
Configurable thinking effort
Fast mode

Target Audience

developerdata scientist

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What models are supported by ChatMock?

ChatMock supports a range of models including gpt-5.4, gpt-5.4-mini, gpt-5.2, gpt-5.1, gpt-5, gpt-5.3-codex, gpt-5.3-codex-spark, gpt-5.2-codex, gpt-5-codex, gpt-5.1-codex, gpt-5.1-codex-max, and codex-mini. These models can be used for various AI-powered tasks.

Can ChatMock perform web searches?

Yes, ChatMock includes a web search tool. You can enable this feature via configuration or directly within a request by setting 'responses_tools' to 'web_search'. This allows the AI model to access and utilize information from the internet.

How can I configure the AI's reasoning in ChatMock?

ChatMock offers several configuration options for AI reasoning, including setting the reasoning effort (none, minimal, low, medium, high, xhigh), reasoning summary verbosity (auto, concise, detailed, none), and reasoning compatibility (legacy, o3, think-tags). These can be set via flags or environment variables.

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Subcategories trending in Coding & Development

Open Source & Models Code Assistants DevOps & Infrastructure No-Code / Low-Code Testing & QA Prompt Engineering

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Also listed in

This tool also appears in

AI Agents & Automation › Chatbots & Conversational AI

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