CONST API provides OpenAI Responses / Chat Completions, Anthropic Messages, and Gemini API interfaces behind one local endpoint. Add API keys, supported subscriptions, or OpenAI-compatible local servers as model channels, connect tools such as Codex, Claude Code, and OpenCode, and inspect channel health, model availability, usage, and errors. Local use needs no account; the hosted Model Marketplace requires a CONST account.
Publisher’s description
What is CONST API?
CONST API by const is open-source Windows software in the vpn & proxy category.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit Windows. It can be installed for the current user only, without administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 0.1.68, released on November 13, 2026. The version history goes back to November 6, 2026: 2 releases, all linked to the official files. The last update is less than a month old.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: CONST API is an open-source vpn & proxy tool for 64-bit PCs. Administrators can deploy it unattended.
Is CONST API safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
AEC88025454AF70BFE808E1ED8014052AAC2C3911F7F7E5B48FA11E005BAEF46· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 2 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.1.68Latest | November 13, 2026 | — | 64-bit EXE (NSIS) |
| 0.1.67 | November 6, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id llxisdsh.ConstAPI -econst-api_0.1.68_windows-x86_64-setup.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- const
- Category
- VPN & proxy
- Licence
- MIT
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 0.1.68
- Released
- November 13, 2026
- Added to the catalogue
- November 11, 2026
- Versions listed
- 2
- Website
- github.com
- winget ID
- llxisdsh.ConstAPI
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is CONST API free?
Yes. CONST API is open-source software under the MIT licence.
Is CONST API safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install CONST API with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can CONST API be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does CONST API run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of CONST API?
The versions page lists all 2 versions with links to their official installer files, back to November 6, 2026.
Can I use CONST API without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to CONST API?
OpenVPN, nginx, Proton VPN, Tailscale and Netbird. The alternatives page compares them.
