AIGROW vs CometAPI
CometAPI sells credit for 500+ models and prices each one at least 20% below its maker’s official rate. AIGROW sells discounted credit for current Claude, GPT, Gemini and Grok models only. The table compares the models both sell, price by price.
Every model both sell costs less per token through AIGROW credit than at CometAPI, on input and on output.
- Less through AIGROW credit
- 9 of 9
- CometAPI 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: CometAPI 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.
| Model | CometAPI | AIGROW credit | Difference |
|---|---|---|---|
| Claude Opus 5.5 | $3.20$16.00 | $1.60$8.00 | 50% less50% less |
| Claude Fable 5.2 | $6.40$32.00 | $3.20$16.00 | 50% less50% less |
| Claude Fable 5.1 | $8.00$40.00 | $4.00$20.00 | 50% less50% less |
| GPT-6 Astra | $8.00$40.00 | $2.50$12.50 | 68% less68% less |
| Claude Sonnet 5.5 | $1.60$8.00 | $0.80$4.00 | 50% less50% less |
| GPT-6.1 Sol | $1.60$8.00 | $0.50$2.50 | 68% less68% less |
| GPT-6.1 Terra | $0.80$4.00 | $0.25$1.25 | 68% less68% less |
| Grok 4.7 | $1.60$4.80 | $0.50$1.50 | 68% less68% less |
| Gemini 4 Argon | $1.60$8.00 | $1.00$5.00 | 37% less37% less |
CometAPI’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.
CometAPI charges more for GPT-6 Astra and GPT-6.1 Sol on prompts over 272K tokens, and for Grok 4.7 over 200K tokens. The table shows the standard rate.
Fees and terms
What each one charges beyond the tokens, and what happens to credit you have not spent.
CometAPI’s terms as published on the pages below, read on 12 November 2026. AIGROW’s are from our Terms of Service.
Is the model the one you paid for?
How each side shows that the model answering is the one it sells.
- CometAPI
- CometAPI’s model pages give each model’s price and how to call it. On 12 November 2026 we found no published test of these models beside the same models at their makers, and we have not run our check on CometAPI. That says nothing about the models it serves: it means a buyer has no result to read, and the script below can produce one.
- 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. 9 of the 9 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
| Model | Here | At the maker |
|---|---|---|
| Compared with Anthropic’s API | ||
| Claude Opus 5.5 | 12 of 12 | 12 of 12 |
| Claude Fable 5.2 | 12 of 12 | 12 of 12 |
| Claude Fable 5.1 | 12 of 12 | 12 of 12 |
| Claude Sonnet 5.5 | 12 of 12 | 12 of 12 |
| Compared with the same model through OpenRouter | ||
| GPT-6 Astra | 12 of 12 | 12 of 12 |
| GPT-6.1 Sol | 12 of 12 | 12 of 12 |
| GPT-6.1 Terra | 11 of 1212 of 12 with effort set to high | 12 of 1211 of 12 with effort set to high |
| Grok 4.7 | 5 of 5 | 5 of 5 |
| Gemini 4 Argon | 7 of 1212 of 12 with effort set to low | 11 of 126 of 12 with effort set to low |
Run the check yourself
Tests CometAPI’s GPT-6.1 Sol beside the same model through OpenRouter, with an OpenRouter key as the reference. Leave out --base and use an AIGROW key to test AIGROW the same way.
MODEL_CHECK_KEY=your_cometapi_key MAKER_KEY=sk-or-your_key node model-check.mjs --base https://api.cometapi.com/v1 gpt-6.1-solEvery 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 CometAPI is the better choice
- Many more models
- CometAPI lists 500+ models from many makers through one key. AIGROW serves current models from Anthropic, OpenAI, Google and xAI, and nothing else.
- One discount rule for every model
- CometAPI prices every model at least 20% below its provider’s official rate, so a model it adds comes in at a discount you can predict.
- A written no-expiry promise
- Its refund policy says credit does not expire while the account is in good standing. AIGROW’s Terms set no expiry date, but make no such promise in words.
Switching from CometAPI
A base URL and a key that starts with ag_, created in API access on the dashboard.
- At CometAPI today: base URL https://api.cometapi.com/v1
- Anthropic SDK and Claude Code: base URL https://aigrow.gg
- OpenAI SDK, Cline, Aider, OpenCode: base URL https://aigrow.gg/v1
- Model ids: ours, such as claude-opus-5.5, and CometAPI’s spelling, such as claude-opus-5-5, both work.
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.
Questions about CometAPI and AIGROW
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