Checked on October 26, 2026
Kie.ai vs fal vs Rendergrid: prices and terms
Three ways to get Nano Banana and GPT Image through an API: prices for our models, payment, starter credits, operating mode, and webhooks, side by side. The Kie.ai and fal data comes from their public pages.
A Rendergrid article. We’re one of the parties in this comparison, so the Kie.ai and fal figures come only from their public pages, each with a link and a date, and below we say separately who each one suits. How we check and correct
01Prices
Prices for our models
What one image costs with each of the three. The Kie.ai and fal prices are from their public pages, checked on .
Rows where all three have a per-image price: 9. Lowest at Rendergrid: 7, at Kie.ai: 0, at fal: 0, tied: 2.
| Model | Resolution | Kie.ai | fal | Rendergrid |
|---|---|---|---|---|
Nano Banana Pronano-banana-pro | 1K | $0.091 | $0.158 | $0.04 (the lowest price in the row) |
| Nano Banana Pro | 2K | $0.09 | no priceno price given for 2K | $0.04 |
| Nano Banana Pro | 4K | $0.12 | $0.30 | $0.07 (the lowest price in the row) |
Nano Banana 2nano-banana-2 | 1K | $0.042 | $0.089 | $0.025 (the lowest price in the row) |
| Nano Banana 2 | 2K | $0.06 | $0.12 | $0.04 (the lowest price in the row) |
| Nano Banana 2 | 4K | $0.09 | $0.16 | $0.06 (the lowest price in the row) |
Nano Banana 2.1nano-banana-2.1 | 1K | $0.023 | ≈ $0.04estimate on their page10 | $0.02 |
| Nano Banana 2.1 | 2K | $0.03 | ≈ $0.059estimate on their page | $0.03 |
| Nano Banana 2.1 | 4K | $0.045 | ≈ $0.134estimate on their page | $0.04 (the lowest price in the row) |
GPT Image 2gpt-image-2 | 1K | $0.034 | ≈ $0.053estimate on their page11 | $0.02 (the lowest price in the row) |
GPT Image 2.5gpt-image-2.5 | 1K | $0.035 | no pricethe page exists, but it has no price12 | $0.025 |
- 1Kie.ai Nano Banana Pro. 18 credits for 1K and 2K, 24 credits for 4K. Source: kie.ai/
nano-banana-pro. Checked on October 26, 2026. - 2Kie.ai Nano Banana 2. 8, 12, and 18 credits. Source: kie.ai/
nano-banana-2. Checked on October 26, 2026. - 3Kie.ai Nano Banana 2.1. 4, 6, and 9 credits. Source: kie.ai/
nano-banana-2-1. Checked on October 26, 2026. - 4Kie.ai GPT Image 2. 6 credits for 1K; there is no quality field on the page; 2K is $0.05 and 4K is $0.08. Source: kie.ai/
gpt-image-2. Checked on October 26, 2026. - 5Kie.ai GPT Image 2.5. One “GPT Image 2.5” page for GPT Image 2.5 Flare and GPT Image 2.5 Sunburst at one price; there is no quality field. Source: kie.ai/
gpt-image-2-5. Checked on October 26, 2026. - 8fal Nano Banana Pro. $0.15 per image; 4K is billed at double the rate; the page doesn’t name a multiplier for 2K. Source: fal.ai/
models/ fal-ai/ nano-banana-pro. Checked on October 26, 2026. - 9fal Nano Banana 2. $0.08 per image; 2K is ×1.5, 4K is ×2. Source: fal.ai/
models/ fal-ai/ nano-banana-2. Checked on October 26, 2026. - 10fal Nano Banana 2.1. Billed by tokens; the figures are the “typical cost” from their table (short request, text-to-image). Source: fal.ai/
models/ google/ nano-banana-2.1. Checked on October 26, 2026. - 11fal GPT Image 2. 1024×1024, quality medium; billed by tokens, the price is from their “canonical sizes” table; their default is quality high—$0.211. Source: fal.ai/
models/ openai/ gpt-image-2. Checked on October 26, 2026. - 12fal GPT Image 2.5. Prices for GPT Image 2.5 Flare and GPT Image 2.5 Sunburst are in the rows below. Source: fal.ai/
models/ openai/ gpt-image-2.5. Checked on October 26, 2026.
The “≈” sign is an estimate that the provider’s own page gives. For GPT Image, quality and size differ between providers: each one’s conditions are in the footnote. We compare prices, not image quality.
02Terms
Payment, starter credits, and operating mode
What the providers’ pages say. Where a page is silent, we say so.
Terms: Kie.ai, fal, and Rendergrid
| Condition | Kie.ai | fal | Rendergrid |
|---|---|---|---|
| Payment | not checked: their payment page is built by a script, and the text names no payment methods | not checked: we couldn’t name the payment methods from their pages; the FAQ only mentions buying credits in billing | USDT (crypto top-up): the full amount sent is credited to the balance |
| Credits at no charge | 80 credits at no charge for new userssource | Credits at no charge and coupons exist; we didn’t find the amount on their pages. Validity: from 1 week to 1 yearsource | There’s no trial balance |
| Synchronous or asynchronous | Asynchronous: POST /api/ | Three ways: a direct fal.run call with no queue, a call through the queue (subscribe), and an asynchronous submission (submit) with polling or a webhooksource 1 source 2 | Asynchronous: POST returns 202 and an ID; the result comes through polling GET /creations/ |
| Webhooks | Yes: callBackUrl in the request; the HMAC signature is turned on in the settings, is computed from the taskId and a timestamp, and doesn’t cover the request bodysource | Yes: the fal_webhook parameter in a request to queue.fal.runsource 1 source 2 | Yes: webhook_url in every request; the creation.completed and creation.failed events; an HMAC-SHA256 signature over the timestamp and the whole request body |
| Failed request | Not charged for failed tasks (their words: “Failed tasks are not charged”)source | Server errors (HTTP 500+) are not charged; input errors (422) can be charged if the server has already used GPU timesource | If a generation fails, the charge is returned to the balance automatically; a declined request is refunded the same way |
| Limits | 20 new requests per 10 seconds per account (up to 120 per minute), no hard limit on concurrent tasks; more on request to supportsource 1 source 2 | A new account: 2 concurrent requests; the limit grows with credit purchases up to 40; above that, through the sales teamsource | By default for a new account: 120 requests per minute and up to 100 generations queued or running; account limits can be adjusted to match your traffic |
| Result storage | Result files are stored for 14 days, the log for 2 monthssource | Files on fal’s CDN are available for at least 7 days, and the period is set by a headersource | Result files are stored for one day |
Our terms in detail are in the documentation.
03Choosing
When to pick Kie.ai, fal, or Rendergrid
Short takeaways with no ranking: each one has cases where it’s the better choice.
When to pick Kie.ai
- You need video, music, or chat in the same balance as your images.
- You want to try the models for free first, on starter credits.
- Results must stay with the provider for longer than a day: Kie.ai stores files for 14 days.
- You pay as a company and their invoice process works for you.
- You’re used to working with support in their Discord and Telegram groups.
When to pick fal
- You need a broad catalog in one place, not only a set of ten models.
- You need a direct synchronous call with no queue or polling.
- You deploy your own models on GPUs or train them.
- You need files on the provider’s side for longer than a day.
- Your volume is large, and you want to discuss custom terms and payment by invoice.
When to pick Rendergrid
- You need one clear price per image and resolution for Nano Banana and GPT Image, with no tokens and no multipliers.
- You need signed webhooks and an automatic refund for a failed request.
- You find it convenient to pay in US dollars through USDT: the full amount sent is credited to the balance.
More on each: Kie.ai alternative · fal alternative.
04FAQ
Frequently asked questions
How do Kie.ai, fal, and Rendergrid differ?
All three sell access to Nano Banana and GPT Image through an API, but they bill differently: Kie.ai in credits, fal per image or per token depending on the model, and Rendergrid with one price per image and resolution in dollars. The exact prices and terms are in the tables above, and every figure has a link.
How much does Nano Banana 2 cost at 1K with each of the three?
At Kie.ai it is $0.04 per image and at fal $0.08 (according to their pages, checked on ); at Rendergrid it is $0.025. Prices change: open the providers’ pages before you decide.
Where do these figures come from?
From the public pages of Kie.ai and fal; the links are in the footnotes to the table and in the “Sources” section. Checked on .
05Sources
Sources and check date
All the data was taken from these pages, checked on .
Kie.ai
- 1Nano Banana Pro on Kie.aikie.ai/
nano-banana-pro · checked on October 26, 2026 - 2Nano Banana 2 on Kie.aikie.ai/
nano-banana-2 · checked on October 26, 2026 - 3Nano Banana 2.1 on Kie.aikie.ai/
nano-banana-2-1 · checked on October 26, 2026 - 4GPT Image 2 on Kie.aikie.ai/
gpt-image-2 · checked on October 26, 2026 - 5GPT Image 2.5 (GPT Image 2.5 Flare and GPT Image 2.5 Sunburst) on Kie.aikie.ai/
gpt-image-2-5 · checked on October 26, 2026 - 6Kie.ai: questions and answers on the home pagekie.ai · checked on October 26, 2026
- 7Kie.ai: Getting Started (limits, file storage, task status)docs.kie.ai/
getting-started · checked on October 26, 2026 - 8Kie.ai: webhook signature verificationdocs.kie.ai/
common-api/ webhook-verification · checked on October 26, 2026 - 9Kie.ai: Common API (authorization)docs.kie.ai/
common-api/ quickstart · checked on October 26, 2026 - 10Kie.ai: Refund Policykie.ai/
refund-policy · checked on October 26, 2026
fal
- 1Nano Banana Pro on falfal.ai/
models/ fal-ai/ nano-banana-pro · checked on October 26, 2026 - 2Nano Banana 2 on falfal.ai/
models/ fal-ai/ nano-banana-2 · checked on October 26, 2026 - 3Nano Banana 2.1 on falfal.ai/
models/ google/ nano-banana-2.1 · checked on October 26, 2026 - 4GPT Image 2 on falfal.ai/
models/ openai/ gpt-image-2 · checked on October 26, 2026 - 5GPT Image 2.5 Sunburst on falfal.ai/
models/ openai/ gpt-image-2.5/ sunburst/ text-to-image · checked on October 26, 2026 - 6GPT Image 2.5 Flare on falfal.ai/
models/ openai/ gpt-image-2.5/ flare/ text-to-image · checked on October 26, 2026 - 7GPT Image 2.5 on fal (page without a price)fal.ai/
models/ openai/ gpt-image-2.5 · checked on October 26, 2026 - 8fal: FAQ (payment, credits, file storage)fal.ai/
docs/ documentation/ model-apis/ faq.md · checked on October 26, 2026 - 9fal: concurrent request limitsfal.ai/
docs/ documentation/ model-apis/ concurrency-limits.md · checked on October 26, 2026 - 10fal: asynchronous call through a queuefal.ai/
docs/ documentation/ model-apis/ inference/ queue.md · checked on October 26, 2026 - 11fal: ways to call a model (sync, queue, webhook)fal.ai/
docs/ documentation/ model-apis/ inference.md · checked on October 26, 2026 - 12fal: webhooksfal.ai/
docs/ documentation/ model-apis/ inference/ webhooks.md · checked on October 26, 2026 - 13fal: how pricing worksfal.ai/
docs/ documentation/ model-apis/ pricing.md · checked on October 26, 2026
Found an inaccuracy? Write to support@rendergrid.io. The correction process is described in “About the editors”.
Try Rendergrid
One price per image and resolution, signed webhooks, an automatic refund for a failed request.