Newton’s
Get API Key

CODE WITH THE MODELS YOU CHOOSE

One API key. Your model. Your coding tool.

Pick a model, then choose a Codex or Claude Code setup guide for Mac or Windows. A setup guide doesn’t mean every model works in that tool.

01

Pick a model

Only catalog-backed available routes appear here.

Official token price comparison isn't verified yet. Newton's token rates are hidden until equivalent official evidence is current.

02

Choose where you code

These are setup-guide destinations, not route-availability claims.

Continue with claude-haiku-4-5-20251001, the Codex setup guide, and Mac instructions.

Get API Key Discover Models

Building your own app? Read the direct API guide.

SEAMLESS INTEGRATION SUITE

Plug into any editor or agent in 15 seconds.

Newton’s exposes a standard OpenAI-compatible gateway (`https://newtons.dev/api/v1`). One key connects your IDE, CLI, or custom pipeline with zero proprietary wrappers.

Cursor

Native IDE AI Assistant

Point Cursor's custom OpenAI endpoint directly to Newton's for high-speed, cost-controlled completions.

Connection Parameters

Base URL:https://newtons.dev/api/v1
API Key:sk-ant-api03-... (Your Newton’s Key)
Recommended Model:claude-sonnet-5-5

Setup Instructions

  1. Open Cursor Settings (Cmd + , on Mac or Ctrl + , on Windows).
  2. Navigate to Models, enable 'Override OpenAI Base URL', and paste https://newtons.dev/api/v1.
  3. Add your Newton’s API key into the OpenAI API Key input.
  4. Add 'claude-sonnet-5-5' or 'claude-sonnet-5' to your model list and start coding.
Settings > Models > OpenAI API Key & Override
// In Cursor Settings -> Models -> OpenAI API:
Base URL: https://newtons.dev/api/v1
API Key: <YOUR_NEWTONS_API_KEY>
Model: claude-sonnet-5-5

INTEGRATION DIRECTORY

Tool status, at a glance.

These statuses describe integration surfaces—not which catalog models are currently routed through each tool. Choose a model and setup guide above, and verify your own workflow before relying on it.

Building your own app? Use the direct API guide.

Experimental integration

Codex (ChatGPT workflow)

Experimental Newton’s Responses route for ChatGPT desktop Codex provider mode.

Setup guide only

Claude Code

Newton’s gateway configuration (ANTHROPIC_BASE_URL + gateway key)

Experimental integration

OpenCode

Custom base URL and API key

OpenAI-compatible provider configurationReviewed 2026-08-21View setup →
Experimental integration

Cline

Custom base URL and API key

OpenAI-compatible provider configurationReviewed 2026-08-21View setup →
Experimental integration

Roo Code

Custom OpenAI Compatible base URL and API key in VS Code extension

Experimental integration

Aider

OPENAI_API_BASE and OPENAI_API_KEY environment variables

Experimental integration

Kilo Code

OpenAI Custom Provider endpoint and credentials in IDE extension

Experimental integration

Zed Editor

settings.json language_models.openai.api_url override

Experimental integration

OpenHands

LLM_BASE_URL and LLM_API_KEY environment variables

Experimental integration

Hermes Agent

OpenAI custom base URL and API key runner environment

Setup guide only

Cursor

Custom base URL and API key

Setup guide only

GitHub Copilot

Custom base URL and API key where supported

Experimental integration

Claude Desktop

Claude Desktop third-party inference settings: Developer → Configure Third-Party Inference, provider Gateway, base URL https://newtons.dev/api, Newton's key as a Bearer credential.

Anthropic-compatible gateway surface (third-party inference mode)Reviewed 2026-10-26View status →

SETUP GUIDES

Bring Newton’s to your workflow.

Setup guidance is not a claim that every model route is available in every coding tool.

Experimental integration

Codex

Select a model and platform above to carry your choices into account setup.

Choose model & setup →
Setup guide only

Claude Code

Select a model and platform above to carry your choices into account setup.

Choose model & setup →
Experimental

OpenCode

Point OpenCode at Newton’s OpenAI-compatible base URL, then prove one tiny repo task completes end to end.

  • Base URL: Set the provider endpoint to Newton’s OpenAI-compatible API
  • API key: Store the Newton’s key in the tool’s secret or provider field
  • Model: Choose an available Newton’s model ID

Check it worked: Open an existing repository.

Undo: Restore the prior provider base URL.

Experimental

Cline

Point Cline at Newton’s OpenAI-compatible API, then test a real coding task instead of relying on a hello-world request.

  • Base URL: Point the provider to Newton’s OpenAI-compatible endpoint
  • API key: Use a dedicated Newton’s API key for the test
  • Model: Select an available Newton’s model ID

Check it worked: Start with a real repository already open.

Undo: Switch the provider back to the previous endpoint.