H3 Max
H3 Max costs $0.096/sec on FairStack · a image to video model for Animating product stills and photography, Turning a keyframe pair into a controlled transition, Social clips built from an existing hero image. No subscription required. Pay per generation with full REST API access. FairStack applies a transparent 20% margin on infrastructure cost so you always see the real price.
What is H3 Max?
H3 Max is fal's post-trained variant of MiniMax H3, co-optimised with fal's inference stack. A 5-second 768P clip renders in under three seconds — faster than real time, and roughly 35x the throughput of the stock H3 endpoint. Audio is generated natively in the same pass as the picture, so dialogue, music and sound effects arrive already in sync; there is no separate audio step and no audio surcharge. Output aspect follows your input image. An optional end frame turns the same endpoint into a first-to-last-frame interpolation. Two resolutions (480P and 768P) and any duration from 5 to 15 seconds. Billing is per second of output, at the model's cost plus a flat 20% platform fee, shown before you spend. In fal's human-preference evaluations H3 Max ranked first on overall quality and prompt understanding against the field. The trade-off versus base MiniMax H3 is resolution ceiling: H3 Max tops out at 768P, so reach for stock H3 when you need 2K or 4K. For everything else — iterating on a shot, batching social cuts, anything where turnaround matters — Max is the faster half of the family. Available on FairStack at infrastructure cost plus a 20% platform fee.
Key Features
What are H3 Max's strengths?
What are H3 Max's limitations?
What is H3 Max best for?
How much does H3 Max cost?
How does H3 Max perform across capabilities?
Estimated from fal's published human-preference evaluation (ranked #1 overall quality + prompt understanding at launch) — NOT independently benchmarked by us. Re-score after the Visual Observatory sweep. PRD-957.
How do I use the H3 Max API?
curl -X POST https://api.fairstack.ai/v1/generations/video \
-H "Authorization: Bearer $FAIRSTACK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "h3-max-i2v",
"prompt": "Your prompt here"
}'import requests
response = requests.post(
"https://api.fairstack.ai/v1/generations/video",
headers={
"Authorization": f"Bearer {FAIRSTACK_API_KEY}",
"Content-Type": "application/json",
},
json={
"model": "h3-max-i2v",
"prompt": "Your prompt here",
},
)
result = response.json()
print(result["url"])const response = await fetch(
"https://api.fairstack.ai/v1/generations/video",
{
method: "POST",
headers: {
Authorization: `Bearer ${process.env.FAIRSTACK_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "h3-max-i2v",
prompt: "Your prompt here",
}),
}
);
const result = await response.json();
console.log(result.url);What parameters does H3 Max support?
Frequently Asked Questions
How much does H3 Max cost?
H3 Max costs $0.096/sec on FairStack as of 2026-09-22. This price includes FairStack's transparent 20% margin on infrastructure cost. No subscription or monthly fee — you pay per generation only. Minimum deposit is $1.
What is H3 Max and what is it best for?
H3 Max is fal's post-trained variant of MiniMax H3, co-optimised with fal's inference stack. A 5-second 768P clip renders in under three seconds — faster than real time, and roughly 35x the throughput of the stock H3 endpoint. Audio is generated natively in the same pass as the picture, so dialogue, music and sound effects arrive already in sync; there is no separate audio step and no audio surcharge. Output aspect follows your input image. An optional end frame turns the same endpoint into a first-to-last-frame interpolation. Two resolutions (480P and 768P) and any duration from 5 to 15 seconds. Billing is per second of output, at the model's cost plus a flat 20% platform fee, shown before you spend. In fal's human-preference evaluations H3 Max ranked first on overall quality and prompt understanding against the field. The trade-off versus base MiniMax H3 is resolution ceiling: H3 Max tops out at 768P, so reach for stock H3 when you need 2K or 4K. For everything else — iterating on a shot, batching social cuts, anything where turnaround matters — Max is the faster half of the family. Available on FairStack at infrastructure cost plus a 20% platform fee. H3 Max is best for Animating product stills and photography, Turning a keyframe pair into a controlled transition, Social clips built from an existing hero image. Available via FairStack's REST API with curl, Python, and Node.js SDKs.
Does H3 Max have an API?
Yes. H3 Max is available via FairStack's REST API at api.fairstack.ai. Send a POST request to /v1/generations/video with your API key and prompt. Works with curl, Python requests, Node.js fetch, and any HTTP client. No SDK installation required.
How does H3 Max compare to other video models?
H3 Max excels at Animating product stills and photography, Turning a keyframe pair into a controlled transition, Social clips built from an existing hero image. It is a image to video model priced at $0.096/sec on FairStack. Key strengths: Exceptional generation speed, Preserves the input frame's composition and aspect. Compare all video models at fairstack.ai/models.