Unlimited Open Source Models
Get PlanLast updated · By ModelsLab Engineering
fal.ai charges $0.025 per megapixel for FLUX.1 [dev] and $0.003 for FLUX.1 [schnell] (checked September 23, 2026). So 100,000 dev images at 1024x1024 cost about $2,500 a month on fal. On the ModelsLab $149/month Open Source Unlimited plan, the same volume has no per-image charge.
Read on fal.ai's own model pages. fal bills images per megapixel and rounds up to the nearest megapixel.
| fal.ai model | Billing unit | Listed price | 1024x1024 image |
|---|---|---|---|
| FLUX.1 [schnell] | Per megapixel | $0.003 / MP | ~$0.003 |
| FLUX.1 [dev] | Per megapixel | $0.025 / MP | ~$0.025 |
| FLUX1.1 [pro] | Per megapixel | $0.04 / MP | ~$0.04 |
| FLUX.1 Kontext [pro] | Per image | $0.04 / image | $0.04 |
| Wan 2.5 text-to-video | Per second of video | $0.05 (480p), $0.10 (720p), $0.15 (1080p) | — |
| Kling 2.5 Turbo Pro | Per clip + per second | $0.35 for 5 s, then $0.07/s | — |
| H100 GPU | Per hour | $4.50/h list, as low as $1.89/h | — |
Source: the fal.ai model page linked for each row in Sources below, read 2026-09-23. A 1024x1024 image is 1.05 megapixels; the monthly table below counts it as one megapixel. If fal rounds it up to two, every fal figure doubles.
1024x1024 images. fal at its listed per-megapixel rate; ModelsLab at the plan that covers the volume.
| Images / month | fal FLUX.1 [schnell] | fal FLUX.1 [dev] | fal FLUX1.1 [pro] | ModelsLab FLUX.1 dev |
|---|---|---|---|---|
| 10,000 | $30 | $250 | $400 | $47 (Standard, 10,000 calls) |
| 100,000 | $300 | $2,500 | $4,000 | $149 (Open Source Unlimited) |
| 1,000,000 | $3,000 | $25,000 | $40,000 | $149 (Open Source Unlimited) |
ModelsLab plan prices from the live plans table, 2026-09-23. FLUX.1 dev (model_id flux) is self-hosted, so it is included in Open Source Unlimited. That plan runs up to 15 generations in parallel: 1M images a month needs about 0.39 images per second, which fits if each image takes under about 38 seconds. FLUX1.1 [pro] is hosted by Black Forest Labs, so it bills per image on ModelsLab and is not part of the unlimited allowance.
fal prices most image models per megapixel and says images are billed by rounding up to the nearest megapixel. Size therefore changes the bill: a 2048x2048 render is four megapixels and costs four times a 1024x1024 one. Kontext [pro] is the exception on this page; it is priced per image.
Wan 2.5 costs $0.05 to $0.15 per second by resolution, and Kling 2.5 Turbo Pro costs $0.35 for five seconds plus $0.07 for each extra second. A ten-second 1080p Wan clip is $1.50.
fal lists an H100 at $4.50 per hour, with lower rates on commitment ("as low as $1.89/h"). That is the price for running your own model on fal hardware, not for calling its hosted endpoints.
fal's terms of service say purchased credits expire 365 days from the date of purchase, and promotional credits expire in 90 days. A prepaid balance you do not spend within a year is lost.
Complaints from public review sites and fal's own SDK tracker. Each quote links to its source; we have not verified the individual accounts. Read on 2026-09-23.
“it then randomly charges more and starts sending you invoices”
“the account did not simply stop at $0. It continued charging and now shows approximately -$11.20”
“the remaining balance was wiped … no email, no warning, no communication”
“Currently when I generate image/video - I need to calculate manually the price. Can you please return the cost with the prediction?”
One POST, model_id picks the model. On a plan, the price per call is known before you send it.
1curl -X POST 'https://modelslab.com/api/v7/images/text-to-image' \2 -H 'Content-Type: application/json' \3 -d '{4 "key": "YOUR_API_KEY",5 "model_id": "flux",6 "prompt": "studio photo of a ceramic mug on a walnut desk, soft window light",7 "width": 1024,8 "height": 1024,9 "samples": 110 }'
1import requests23response = requests.post(4 "https://modelslab.com/api/v7/images/text-to-image",5 json={6 "key": "YOUR_API_KEY",7 "model_id": "flux",8 "prompt": "studio photo of a ceramic mug on a walnut desk, soft window light",9 "width": 1024,10 "height": 1024,11 "samples": 1,12 },13)14print(response.json())
Moving off fal? The fal.ai alternative guide maps each endpoint. For the other serverless option, see Replicate pricing; for every FLUX variant side by side, see FLUX API pricing; and for our own plans, see ModelsLab pricing.
Feature-by-feature comparison and a migration checklist.
Per-second GPU billing, idle time and the Cloudflare change.
Basic $21, Standard $47, Open Source Unlimited $149 a month.
Every FLUX variant priced across five providers.
What changes when you move off Replicate.
Image API prices beyond FLUX.
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Want to know more? You can email us anytime at support@modelslab.com
Every competitor price and quote on this page, with the date we read it.