The official OpenAI gpt-image-2 API does not support the Free tier. ChatGPT Free, Puter.js, and signup-credit tools can still give you a zero-upfront start, but they are separate access contracts—not free backend API credit. These route facts were checked on July 15, 2026.
Choose the route by the job, the payer, and the credential owner:
| Your job | Best starting route | Who pays? | Who owns the credential? |
|---|---|---|---|
| Create images manually in an app | ChatGPT Free | The ChatGPT product allowance covers limited use | Your OpenAI app session; no backend API key |
| Add generation to a frontend without funding every user | Puter.js User-Pays | Each end user | The user authenticates through Puter; you do not expose an OpenAI key |
| Run a short browser evaluation | A route-owned signup credit or playground | The tool or site until its credit ends; its terms control the limit | The tool account or a user-supplied key, depending on the route |
| Automate generation from your backend | OpenAI direct or a paid provider | You or your team | A server-side OpenAI or provider key |
The stop rule is simple: if the work is sensitive, repeatable, customer-facing, or server-side, use a paid, logged route whose billing, credentials, model mapping, and retry policy you can audit.
Quick answer: five contracts can look “free”
“Free GPT Image 2” is useful only after you name the contract. The official API, a consumer app allowance, a User-Pays frontend, a finite trial, and a paid provider can all produce an image, but they put the bill, identity, secret, and operational risk in different places.
| Access contract | Payer | Authentication or key | What continues after the first test? | Good fit | Stop rule |
|---|---|---|---|---|---|
| Official OpenAI API | You or your organization | OpenAI project key held on your server | Paid access subject to account limits | Backend jobs, logs, retries, first-party controls | Do not call it a Free tier; set a spend and retry budget |
| ChatGPT Free | OpenAI product allowance within the user's plan | ChatGPT account session | App-side image use under a separate tool limit | Manual creation and one-off edits | Stop if you need an API key, automation, or shared backend logs |
| Puter.js User-Pays | Each authenticated end user | Puter user authentication; no developer-held OpenAI key | Usage follows each user's Puter contract | Browser features whose users can sign in and pay | Stop if central billing, server execution, or your own service account is required |
| Signup credit or playground | The route owner until a credit or allowance ends, or the user through a supplied key | Site account, site-owned route, or user-supplied key | Whatever the route owner currently states | Disposable, non-sensitive evaluation | Stop when the owner, renewal, data, or rights terms are unclear |
| Paid provider API | You or your organization | Provider key held on your server | Paid provider access under its own model mapping and support contract | Backend integration when the provider route fits | Log the provider, model ID, price owner, response shape, and support boundary |

Two phrases cause most mistakes. No developer API key does not mean nobody authenticates or pays; Puter moves those duties to the end user. Free to open does not mean free to generate; a workbench may still require a current key, account balance, or route-owned credit.
Choose by where the work runs
The fastest reliable choice is architectural, not promotional: decide whether the image is created manually, in a browser feature, or on your server.
Manual app: keep one-off work in ChatGPT
Use ChatGPT when a person can type the prompt, inspect the result, revise it, and save the image inside the app. This route avoids backend setup, but it also provides no project API key, request queue, webhook, central retry policy, or customer-level cost ledger.
User-Pays frontend: let each Puter user fund their request
Use Puter.js when your application can ask each user to authenticate through Puter and accept Puter's User-Pays contract. Your frontend does not contain an OpenAI secret and your business does not fund every generation, but the user's Puter identity, cost, applicable limits, and Puter terms become part of your product flow.
Paid backend: own the key, bill, logs, and retries
Use OpenAI direct or a paid provider when your server must accept jobs, protect a secret, retry safely, attribute spend, retain request IDs, or support customers. This is the only one of the three architectures here that gives your backend a credential it can operate under; it is also the route where your team owns the bill.

Never place an OpenAI or provider secret in browser JavaScript. A client-side app either uses a user-authenticated contract such as Puter or calls your own backend, which holds the secret outside the page.
Official OpenAI API: paid, backend-ready, and auditable
Use the official API when first-party controls matter more than finding a zero-upfront route. On July 15, 2026, the OpenAI GPT Image 2 model page lists the model ID as gpt-image-2 and the Free tier as Not supported. Paid usage tiers have TPM and IPM limits, but those limits are throughput caps—not a free image allowance.
For a single generation or edit, OpenAI recommends the Image API. For a conversational or multi-step image experience, the Responses API can call an image-generation tool, but that route also involves the selected mainline model and its token usage. The image generation guide is the implementation owner for endpoint and parameter details.
Here is a bounded server-side JavaScript smoke test. It uses an environment-held key, requests one low-quality square output, decodes the returned base64, and writes a local file:
jsimport fs from "node:fs"; import OpenAI from "openai"; const openai = new OpenAI({ apiKey: process.env.OPENAI_API_KEY, }); const result = await openai.images.generate({ model: "gpt-image-2", prompt: "A clean product photo of a red enamel camping mug on a white table", size: "1024x1024", quality: "low", }); const imageBytes = Buffer.from(result.data[0].b64_json, "base64"); fs.writeFileSync("gpt-image-2-smoke-test.png", imageBytes);
Before increasing quality or volume, verify four things in the same test record: the returned model or route label, one saved output, the request or trace identifier available to you, and the billed usage in your account. OpenAI notes that organization verification may be required for GPT Image models. Input text tokens—and image input tokens for edits—are additional to the output examples below.
For a complete endpoint, edits, parameters, and error-handling walkthrough, use the dedicated GPT Image 2 API guide. Keep detailed price comparisons in the GPT Image 2 pricing owner.
ChatGPT Free: valid for manual images, not backend API credit
Use ChatGPT Free only when the work can stay manual. OpenAI's current ChatGPT Free Tier FAQ says Free users can create images, while image creation has a separate tool limit and stricter access than paid plans. The reset state is shown in the product, so a fixed daily number would be less reliable than the account's live message.
The Images in ChatGPT FAQ covers in-app creation, editing, saving, copying, sharing, and downloading. Those product actions are useful for a creator, but none creates an OPENAI_API_KEY, funds an API project, or gives a backend access to ChatGPT's app allowance.
ChatGPT Free is the right first route when all four conditions are true:
- a person can submit and review each prompt;
- waiting for the in-product limit to reset is acceptable;
- no customer-facing backend depends on the result;
- you can save and document the selected output manually.
Move to a paid backend when you need scheduling, queues, retries, stable request logging, central billing, or a service promise to users.
Puter.js: developer-zero-cost, end-user-paid frontend access
Use Puter when the browser is the product surface and each end user can authenticate and cover their own usage. Puter's June 30, 2026 image-generation tutorial lists openai/gpt-image-2 and explains its User-Pays model: the developer does not manage an OpenAI key or pay the user's AI bill; the user signs in through Puter and pays under that route.
A minimal frontend example makes the ownership boundary visible:
html<div id="result"></div> <script src="https://js.puter.com/v2/"></script> <script> puter.ai .txt2img("A paper-cut map of an island research station", { model: "openai/gpt-image-2", quality: "low", }) .then((imageElement) => { document.querySelector("#result").appendChild(imageElement); }); </script>
What disappears is your developer-held OpenAI secret, not identity, billing, limits, or a data processor. Puter authentication is part of the experience; each user's available access can differ; and Puter's terms govern the route. Review that contract before sending customer images, personal data, confidential designs, or regulated material.
Do not treat this browser call as a hidden backend. If your system needs scheduled jobs, a service account, central spend control, webhooks, or server-owned logs and retries, use a paid server route instead.
Signup credits, playgrounds, and provider routes
Use online tools for a disposable evaluation, then classify the exact contract before trusting the result. A page can be legitimate and still be the wrong architecture for your application.
A signup credit is a finite trial
TwoShot's GPT Image 2 page currently offers browser access without an OpenAI key and advertises credits on signup. That can be a useful zero-upfront test, but the credit belongs to TwoShot's route. It does not prove a recurring OpenAI Free tier, a fixed renewal schedule, commercial rights, retention behavior, or a production API contract.
Use a neutral prompt with no private input. Before investing more time, check the account requirement, remaining credit, exact model label, download behavior, watermark, storage or gallery behavior, terms, and what happens when the credit ends.
A free-to-open workbench may still need your key
YingTu is useful as a browser workbench for comparing prompts and routes. The interface is free to open, but generation requires a current API key and follows the account's route and balance rules. That makes it a convenient test surface—not proof of free generation.
Use it when you want a no-code place to test a non-sensitive prompt before wiring an API. Record the model choice, prompt version, size, quality, and key owner so the browser result can be reproduced later on the route you approve.
A paid provider is a separate backend contract
When OpenAI-compatible access or payment convenience matters, laozhang.ai currently lists a provider-owned price of $0.03 per call. This is not OpenAI's official price. If you need explicit size or 4K control, use the documented gpt-image-2-vip route and verify the requested raster rather than assuming that a label proves the output dimensions.
Keep the provider boundary visible in logs: base URL, provider model ID, request shape, returned data shape, billed result, and support owner. Choose OpenAI direct when first-party billing and controls are the requirement; choose a provider only when its separate contract materially improves your route.
When to stop hunting for trials
A bounded paid smoke test is often cheaper than another hour spent creating accounts and reverse-engineering unclear limits. OpenAI's dated output examples for one 1024×1024 image are $0.006 at low quality, $0.053 at medium, and $0.211 at high. For twenty outputs, the arithmetic is:
| Route and setting | Calculation | Twenty-output amount | What is excluded |
|---|---|---|---|
| OpenAI official, low, 1024×1024 | 20 × $0.006 | $0.12 | Input tokens and retries |
| OpenAI official, medium, 1024×1024 | 20 × $0.053 | $1.06 | Input tokens and retries |
| OpenAI official, high, 1024×1024 | 20 × $0.211 | $4.22 | Input tokens and retries |
| laozhang.ai provider example | 20 × $0.03 | $0.60 | Any differences in model mapping, parameters, billing rules, and failed calls |
The provider row is not an apples-to-apples quality comparison. OpenAI's rows are output-cost examples tied to size and quality; the $0.03 row is a provider call price under a different contract. Your real test budget also includes prompt input, reference-image input, retries, rejected outputs, human review, and the time spent validating the route.

Switch from trial hunting to a paid, logged test as soon as any of these is true:
- the input contains customer, unreleased, personal, or licensed material;
- you need the same model and parameters again tomorrow;
- a backend, scheduled job, or customer workflow depends on the result;
- you need to diagnose failures, attribute spend, or contact one accountable support owner;
- the time spent checking credits and wrappers already exceeds the bounded test you need.
The 60-second route audit
Before you upload an image or paste code, answer these six questions. If the route cannot answer them, restrict it to disposable testing or reject it.
| Audit field | Evidence to find | Fail condition |
|---|---|---|
| Payer | A named account, plan, balance, credit, or User-Pays statement | “Free” is the only billing explanation |
| Credential | OpenAI project key, provider key, app session, Puter user login, or named site account | A shared key is pasted into a public page or repository |
| Limit or renewal | Live account limit, finite credit, reset message, or paid usage rule | No explanation of what stops or charges the next request |
| Model mapping | Exact route-owned model ID and parameter support | A brand label is the only proof of the model |
| Data and rights | Terms for uploads, retention, galleries, watermarks, downloads, and output use | Sensitive input is requested before the terms are clear |
| Logs and support | Request or task ID, billing record, error owner, and contact path | Failures cannot be attributed to the app, route, model, or provider |
A download button answers only “can I save this file?” It does not by itself answer who may reuse the output, whether an uploaded reference is retained, whether a public gallery is involved, or who resolves a disputed bill. For that deeper decision, use the online generation and download guide.
A five-minute approval sequence
You can turn the audit into a repeatable route decision:
- Name the runtime. Manual app, user-authenticated frontend, or trusted backend.
- Name the payer. Product allowance, end user, route-owner credit, your OpenAI account, or your provider account.
- Name the credential. App session, Puter authentication, site account, OpenAI project key, or provider key.
- Verify the live contract. Open the route owner's current model, pricing, limit, and terms pages; do not borrow a claim from another surface.
- Run one non-sensitive smoke test. Save the prompt, selected model, parameters, output, timestamp, and any request or task ID. For a browser route, save the account type and visible remaining credit or limit in the same record.
- Apply the stop rule. If the route cannot support the intended data, repeatability, billing, and support needs, do not scale it.
This sequence separates prompt quality from route quality. A good image does not prove the billing or rights contract, and a cheap call does not prove the model mapping or production fit.
Pick the canonical next step
Make the free-versus-paid route decision first, then use the narrower owner for what you are building:
- For server code, edits, endpoint choices, and error handling, open the GPT Image 2 API guide.
- For official token prices, size and quality economics, and provider comparisons, use GPT Image 2 API pricing.
- For browser creation, download, watermark, retention, and output-rights checks, use GPT Image 2 online free download.
- For Microsoft subscription, region, deployment, and quota questions, use the separate Azure GPT Image 2 route.
- For exact dimensions and raster verification, open the GPT Image 2 4K guide.
- For the broader question of OpenAI keys, credits, and billing activation, use the OpenAI API key free-trial guide.
FAQ
Is the official GPT Image 2 API free?
No. As checked on July 15, 2026, OpenAI's gpt-image-2 model table lists the Free tier as Not supported. ChatGPT Free, Puter User-Pays, and route-owned credits are separate contracts.
Can I generate GPT Image 2 images in ChatGPT Free?
Yes, inside ChatGPT under the Free plan's separate image-tool limits. The live product tells you when the tool limit resets. That app allowance is not API credit and cannot fund a backend.
Does Puter.js provide a free OpenAI API key?
No. Puter removes the developer-held OpenAI key through its User-Pays architecture. Each end user authenticates with Puter and covers their own usage, so it is a frontend contract rather than a free server key.
Do I need an API key?
For OpenAI direct or a paid provider backend, yes: keep the corresponding project or provider key on your server. ChatGPT uses an app session. Puter uses end-user authentication. Trial and playground routes may use a site account, site-owned credit, or a user-supplied key.
Can I call GPT Image 2 from Python or a backend for free?
Not through the supported OpenAI Free tier, because that tier is not available for gpt-image-2. Use a paid OpenAI or provider key and keep it server-side. Puter’s documented User-Pays example is a browser route, not a secret backend credential.
Are signup credits a recurring free tier?
Not unless the route owner explicitly says so. Treat signup credits as finite evaluation access, record the stop condition, and recheck the account before every claim about quantity or renewal.
What is the cheapest controlled test?
For the official route, twenty low-quality 1024×1024 output examples total $0.12 before input tokens and retries. If you only need manual exploration, ChatGPT Free or a route-owned trial may avoid upfront spend. Choose by data sensitivity and architecture, not the smallest headline number.
Is Azure a free GPT Image 2 API route?
Azure uses Microsoft's subscription, region, deployment, quota, and billing contract. It does not change the OpenAI direct API Free-tier verdict. Use the dedicated Azure route guide for current Microsoft-owned details.
Does a no-key online tool make my images private or commercially usable?
No. No developer key says nothing about upload retention, public galleries, watermarks, output rights, or the account paying for the request. Check the tool owner's current terms before using private inputs or publishing the output.
Is laozhang.ai's $0.03 per call an official OpenAI price?
No. It is current laozhang.ai provider pricing and belongs to that provider's contract. OpenAI's official examples vary by output size and quality and also add input-token cost.
Can GPT Image 2 generate 4K output?
Current OpenAI documentation supports flexible sizes, including documented 4K examples, but the exact request and returned raster still need verification. For a provider recommendation that promises explicit size or 4K control, use the gpt-image-2-vip route and verify the downloaded dimensions.
