AI API

AIGROW vs the OpenAI API

OpenAI sells its GPT models through its own API at list price, with 50% off batch requests that can wait. AIGROW sells discounted credit that runs GPT-6 Astra, GPT-6.1 Sol and GPT-6.1 Terra through an OpenAI-compatible endpoint, beside Claude, Gemini and Grok.

See the table

Every model both sell costs less per token through AIGROW credit than at OpenAI, on input and on output.

AIGROW vs the OpenAI API
3models both sell, priced side by side
Less through AIGROW credit
3 of 3
OpenAI prices read
12 November 2026
Model check
11 November 2026
Sponsored placement
none

Nothing on this page is paid for by anyone.

Price per model: OpenAI and AIGROW credit

USD per million tokens, input on the first line and output on the second. The difference is rounded so it never overstates a saving.

Prices per million tokens at OpenAI and through AIGROW credit
ModelOpenAIAIGROW creditDifference
GPT-6 Astra$10.00$50.00$2.50$12.5075% less75% less
GPT-6.1 Sol$2.00$10.00$0.50$2.5075% less75% less
GPT-6.1 Terra$1.00$5.00$0.25$1.2575% less75% less

OpenAI’s prices as published on 12 November 2026, each linked from its row. AIGROW’s are the rates the endpoint bills with, at the price credit sells for. Prices change, so check theirs before you decide.

OpenAI’s prices are for prompts up to 272K tokens; longer prompts cost more. Its Batch API takes 50% off requests that do not need an answer at once. AIGROW has no batch rate.

Fees and terms

What each one charges beyond the tokens, and what happens to credit you have not spent.

TermsAIGROWOpenAI
Fee when you buy creditNone: $25 buys $100 of creditNone
Smallest purchase$25$5, with $10 as the default amount
Credit expiryNo expiry date in our TermsOne year after purchase
RefundsSpent credit: never. Unspent credit: within 14 days of buying it, for consumers in the EU, EEA, UK and Switzerland.Not refundable unless the law, a contract or an approved exception requires it
PaymentBy card, at the Stripe checkoutNot listed on its prepaid billing page
Models9 models from Anthropic, OpenAI, Google and xAIOpenAI’s models

OpenAI’s terms as published on the pages below, read on 12 November 2026. AIGROW’s are from our Terms of Service.

OpenAI pricing · OpenAI on prepaid billing

Is the model the one you paid for?

How each side shows that the model answering is the one it sells.

OpenAI
OpenAI makes GPT, so its API serves GPT itself. Our check reached OpenAI’s models through OpenRouter, which sends them to OpenAI or to a cloud that hosts them.
Certified genuine by AIGROW
On 11 November 2026 we sent each model we sell the same prompts as the same model at its maker or through OpenRouter, and compared the answers, the prompt tokens and the tool calls. 3 of the 3 models on this page met our rule. This is AIGROW’s own check: no model maker reviewed or endorsed it. See every result and the method
Results of the model check of 11 November 2026
ModelHereAt the maker
Compared with the same model through OpenRouter
GPT-6 Astra12 of 1212 of 12
GPT-6.1 Sol12 of 1212 of 12
GPT-6.1 Terra11 of 1212 of 12 with effort set to high12 of 1211 of 12 with effort set to high

A 2026 study by the CISPA Helmholtz Center for Information Security tested 17 unofficial APIs that claim to give access to the makers’ models, and found identity verification failures in 45.83% of its fingerprint tests. It left out routing platforms that disclose where they send requests, such as OpenRouter. Any seller below list price can be checked with the script below, AIGROW included. Read the study.

Run the check yourself

Tests AIGROW’s GPT-6.1 Sol beside the same model through OpenRouter, the reference our check used for OpenAI’s models, so it takes an OpenRouter key rather than an OpenAI one.

MODEL_CHECK_KEY=ag_your_key MAKER_KEY=sk-or-your_key node model-check.mjs gpt-6.1-sol

Download model-check.mjs

Every request is billed as usual. The battery is the costly one: a few cents of credit on most models, more when a model thinks for long. To test another seller’s API, pass its address with --base.

When OpenAI is the better choice

Every OpenAI model and API
OpenAI sells all its models, and the Responses API that Codex uses. AIGROW takes chat requests only, so Codex does not run on it.
Half price for batch requests
Requests that can wait cost 50% less through OpenAI’s Batch API. AIGROW has no batch rate.
An account with the maker
You deal with OpenAI directly, under its own terms and data controls. AIGROW is independent of OpenAI.

Switching from OpenAI

A base URL and a key that starts with ag_, created in API access on the dashboard.

  • At OpenAI today: base URL https://api.openai.com/v1
  • Anthropic SDK and Claude Code: base URL https://aigrow.gg
  • OpenAI SDK, Cline, Aider, OpenCode: base URL https://aigrow.gg/v1

Some lines behave differently from the maker’s endpoint, for example on max_tokens and on the starting reasoning effort: the model check lists each difference with its numbers. Codex sends Responses API requests, which this endpoint does not take.

The setup guide covers every other tool, and the Claude Code page walks through its settings one by one.

Our Terms say no rate costs more than the maker’s list price at the price you pay for credit, and the table shows how much less each GPT model costs through AIGROW credit. OpenAI’s Batch API takes 50% off requests that can wait, which AIGROW does not offer.

We check it: each GPT model we sell is sent the same prompts as the same model through OpenRouter, and the score, the prompt tokens and the tool call are compared. Settings such as the starting reasoning effort and the output cap can differ from OpenAI’s, and our model check page lists each difference.

No. Codex sends Responses API requests, which AIGROW does not take, so run Codex on OpenAI’s own API. Tools that send chat requests, such as Cline, Aider and OpenCode, work with the base URL https://aigrow.gg/v1.

OpenAI’s help center says purchased credits expire after one year and are not refundable unless the law, a contract or an approved exception requires it. AIGROW’s Terms set no expiry date for credit. Spent credit is not refunded, and consumers in the EU, EEA, UK and Switzerland can have unspent credit refunded within 14 days of buying it.

No. AIGROW is independent and is not affiliated with, endorsed by or sponsored by OpenAI. The GPT names identify OpenAI’s models only.

Run your own workload on both, then compare the bills.

Start with the $25 pack, run your real workload against it, and check the dashboard before buying more.

Monthly plans or one-off packs · redemption code delivered at once · usage dashboard included