# sums001/Windows-Copilot-API

Reverse engineered Windows Copilot into an OpenAI-compatible API. Access GPT-4 and GPT-5 models through a simple REST interface without API keys or billing.

Repository: https://github.com/sums001/Windows-Copilot-API
Canonical: https://ross.abutalabs.com/products/windows-copilot-api
Language: Python
License: MIT
License Family: permissive
Topics: ai, ai-agents, api, copilot, llm, microsoft-copilot, openai
Last push: 2026-06-27T16:16:19+00:00

## Health v2 (maintenance only)
Score: 53/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 89, release rhythm 35, longevity 5
- inputs: {"age_days": 75, "days_push": 67, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, young
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1213, forks 397 (observed 2026-08-28T04:04:00.879088+00:00)

## What it is
A Python library and local server that reverse engineers Microsoft Copilot's free web chat into an OpenAI-compatible REST API, giving access to GPT-4 and GPT-5 models without API keys or billing. It supports streaming, multi-turn conversations, and works as a drop-in replacement for the official OpenAI SDK.

## Use cases
- use gpt-4 for free without an openai api key
- point existing openai sdk apps at a local free llm endpoint
- build chatbots on top of microsoft copilot
- stream llm responses in python
- run a local openai-compatible api server
- access copilot in regions where anonymous access is blocked

## When to choose
- you want free GPT-4/GPT-5 access using a Microsoft account instead of paid API billing
- you already have OpenAI-compatible tooling and want a drop-in local endpoint
- you need a Python library for streaming, multi-turn Copilot chats

## When to avoid
- you need a production-grade, officially supported API with SLAs
- you cannot accept the risk of violating Microsoft's terms of service
- you need models or features Copilot's web chat does not expose

## Facets
- artifact type: library
- maturity: active
- function: llm-inference, http-server, http-client, chatbot, reverse-engineering
- domain: large-language-models, artificial-intelligence, apis, developer-tools
- platform: python, cross-platform, self-hosted
- tags: openai-compatible, microsoft-copilot, free-llm-api, unofficial-api, gpt-4, gpt-5, streaming, rest-api, docker

## Member repositories
- sums001/Windows-Copilot-API (main) score 53

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:00.879088+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:17:57.065627+00:00, confidence not recorded.
  - readme: https://github.com/sums001/Windows-Copilot-API (fetched 2026-08-28T04:04:00.879088+00:00, sha a0a98cbdac7f)
- Data as of 2026-08-30T08:39:29.467469+00:00.