Free tool

OpenAI Migration Playground

Side-by-side diff view when transforming OpenAI SDK code to unlimitedcodex with model mapping.

Tool strategy

What this tool gives you

Side-by-side diff view when transforming OpenAI SDK code to unlimitedcodex with model mapping. The tool is useful before checkout because it helps buyers make one specific OpenAI-compatible API access decision without sharing private secrets.

Best fit

Decision support and learning when the buyer needs to explore tradeoffs before committing.

Output

A recommendation, simulation, or guided plan that turns vague API access questions into a next action.

Next step

Use the recommendation to choose a test path, package, migration step, or 4-connection planning boundary.

Tool citation bundle

Intent, inputs, and output use cases

Explore package fit, retry behavior, migration diffs, model choice, or rate-limit planning before buying. Specific tool: Side-by-side diff view when transforming OpenAI SDK code to unlimitedcodex with model mapping.

Search intent

OpenAI Migration Playground
free migration playground
migration playground for OpenAI-compatible API

Input boundary

Use only non-secret planning inputs. Do not paste raw API keys, bearer tokens, full auth headers, private logs, customer data, or billing screenshots.

Result use cases

Explore API access tradeoffs before checkout.
Choose a package, retry plan, migration path, model value, or rate-limit boundary.
Convert uncertain setup questions into an ordered recommendation.

Before

import OpenAI from "openai";

const client = new OpenAI({ apiKey: process.env.OPENAI_API_KEY });

export async function runChat() {
  const response = await client.chat.completions.create({
    model: "gpt-4o",
    messages: [{ role: "user", content: "Validate before cutover." }],
    stream: true
  });

  return response;
}

After

import OpenAI from "openai";

const client = new OpenAI({ apiKey: process.env.UCX_API_KEY });

export async function runChat() {
  const response = await client.chat.completions.create({
    model: "DELIVERED_MODEL_ID",
    messages: [{ role: "user", content: "Validate before cutover." }],
    stream: true
  });

  return response;
}

+0 / -0 / ~2 modified lines

• Updated: const client = new OpenAI({ apiKey: process.env.OPENAI_API_KEY }); -> const client = new OpenAI({ apiKey: process.env.UCX_API_KEY });

• Updated: model: "gpt-4o", -> model: "DELIVERED_MODEL_ID",

• Warning: Streaming is not enabled on unlimitedcodex validation stubs. Set stream to false or handle 501 streaming_not_enabled.

Streaming is not enabled on unlimitedcodex validation stubs. Set stream to false or handle 501 streaming_not_enabled.

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XHigh Package Quiz

Answer six questions to compare GPT-5.5 XHigh Weekly with standard Monthly and get a pre-filled signup link; GPT-5.6 Sol is available at an eligible $69 first week followed by $89/week, or a $179 first month followed by $199/month.

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Rate Limit Planner

Plan backoff settings and quota monitoring checklist from expected RPS and team size.

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Choose the API package that matches your model.

GPT-5.5 XHigh is $19/week, or an eligible $59 first month followed by $69/month. GPT-5.6 Sol is an eligible $69 first week followed by $89/week, or a $179 first month followed by $199/month. Complete checkout, then receive manual setup in 10 minutes to 5 hours.

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