Runway Gen-4 (10s)
Runway Gen-4 (10s) costs $0.180/clip on FairStack — a text to video model for Longer video clips, Narrative scenes, Single-take 10s videos. 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 Runway Gen-4 (10s)?
Runway Gen-4 (10s) is Runway's extended-duration variant that generates 10-second video clips in a single pass, doubling the standard 5-second generation length. Built on Runway's Gen-4 architecture, it maintains the same visual quality and motion coherence while producing longer, more developed scenes that can capture complete actions and narrative beats without the need for post-production stitching. At $0.15 per generation, the 10-second variant offers good value for its duration, effectively halving the per-second cost compared to generating two 5-second clips. The 720p output resolution is suitable for social media, web content, and draft production work. Generation quality matches the standard Gen-4 model, with strong prompt adherence and natural motion. Compared to generating multiple shorter clips and concatenating them, single-pass 10-second generation avoids the visual discontinuities that often appear at edit points. Runway's established reputation for reliable video generation carries over to this variant. Best suited for longer video clips, narrative scenes, and single-take content where temporal continuity across 10 seconds is important. Available on FairStack at infrastructure cost plus a 20% platform fee.
Key Features
What are Runway Gen-4 (10s)'s strengths?
What are Runway Gen-4 (10s)'s limitations?
What is Runway Gen-4 (10s) best for?
How much does Runway Gen-4 (10s) cost?
How does Runway Gen-4 (10s) perform across capabilities?
Gen4 10s variant — same quality, longer duration
How do I use the Runway Gen-4 (10s) API?
curl -X POST https://api.fairstack.ai/v1/generations/video \
-H "Authorization: Bearer $FAIRSTACK_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "runway-gen4-720p-10s",
"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": "runway-gen4-720p-10s",
"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: "runway-gen4-720p-10s",
prompt: "Your prompt here",
}),
}
);
const result = await response.json();
console.log(result.url);What parameters does Runway Gen-4 (10s) support?
Frequently Asked Questions
How much does Runway Gen-4 (10s) cost?
Runway Gen-4 (10s) costs $0.180/clip on FairStack as of 2026-05-13. 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 Runway Gen-4 (10s) and what is it best for?
Runway Gen-4 (10s) is Runway's extended-duration variant that generates 10-second video clips in a single pass, doubling the standard 5-second generation length. Built on Runway's Gen-4 architecture, it maintains the same visual quality and motion coherence while producing longer, more developed scenes that can capture complete actions and narrative beats without the need for post-production stitching. At $0.15 per generation, the 10-second variant offers good value for its duration, effectively halving the per-second cost compared to generating two 5-second clips. The 720p output resolution is suitable for social media, web content, and draft production work. Generation quality matches the standard Gen-4 model, with strong prompt adherence and natural motion. Compared to generating multiple shorter clips and concatenating them, single-pass 10-second generation avoids the visual discontinuities that often appear at edit points. Runway's established reputation for reliable video generation carries over to this variant. Best suited for longer video clips, narrative scenes, and single-take content where temporal continuity across 10 seconds is important. Available on FairStack at infrastructure cost plus a 20% platform fee. Runway Gen-4 (10s) is best for Longer video clips, Narrative scenes, Single-take 10s videos. Available via FairStack's REST API with curl, Python, and Node.js SDKs.
Does Runway Gen-4 (10s) have an API?
Yes. Runway Gen-4 (10s) 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 Runway Gen-4 (10s) compare to other video models?
Runway Gen-4 (10s) excels at Longer video clips, Narrative scenes, Single-take 10s videos. It is a text to video model priced at $0.180/clip on FairStack. Key strengths: Longer clips without stitching, Gen-4 quality. Compare all video models at fairstack.ai/models.
What makes Runway Gen-4 (10s) stand out from other video models?
Runway Gen-4 (10s) is distinguished by longer clips without stitching and gen-4 quality. Generation typically completes in 5-15 seconds.
What are the known limitations of Runway Gen-4 (10s)?
Key limitations include: $0.15 per generation; 720p maximum. FairStack documents these transparently so you can choose the right model for your workflow.
How fast is Runway Gen-4 (10s)?
Runway Gen-4 (10s) typically completes in 5-15 seconds. This provides a good balance between output quality and processing speed for most production workflows.
What video capabilities does Runway Gen-4 (10s) offer?
Runway Gen-4 (10s) offers: 10-second generation; runway gen-4 quality; longer scene development. All capabilities are accessible through both the FairStack web interface and REST API.
See how Runway Gen-4 (10s) compares
Side-by-side pricing comparisons with competitors