Runway ML Gen-3 stuck — how long does generation take?

Runway Gen-3 Alpha takes 30-120 seconds for 5-10 second clips at 720p. During peak demand (14:00-22:00 UTC), this can extend to 3-5 minutes. Cancel and retry if stuck for 5+ minutes. Generation time does NOT affect credit cost — you pay per second of output video, not per minute of wait time.

Runway ML free plan — how many credits do I get?

Runway free plan gives 125 starter credits ONE TIME only — they do not reset monthly. Once exhausted, you must upgrade to Standard ($15/mo, 625 cr/mo) or Pro ($35/mo, 2250 cr/mo). Gen-3 5s video = 5 credits. A 4K upscale adds extra credits. Credits do not roll over to the next month on paid plans.

Runway ML vs Kling vs Sora — which is better for video?

Runway Gen-3 Alpha is best for professional video production workflows with Act-One (motion capture), fine-grained motion prompting, and a clean API. Kling AI (Kuaishou) often produces higher-quality motion realism at lower cost. OpenAI Sora produces longer videos with more consistent physics but has limited API availability. For professional video editing integration and API access, Runway leads. For cost-per-quality on image-to-video, Kling is often better value.

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Runway ML Not Working?

Runway Gen-3 video stuck, credits exhausted, API 401 error, image-to-video output wrong, or Act-One motion capture failing? Check live status and fix it fast.

Runway ML — live status

Updated every 5 minutes. Full history at prismix.dev/service/runway.

Full status →

What's wrong? Diagnose fast

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Gen-3 video stuck / slow queue

Gen-3 takes 30-120s normally. Peak hours 14:00-22:00 UTC can add 3-5 min. If stuck 5+ min: cancel and retry. Prompt must be in English. Celebrity faces, copyrighted characters, or explicit content trigger automatic rejection.

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Credits exhausted

Free plan = 125 one-time starter credits (NOT monthly reset). Once gone, upgrade required. Standard: $15/mo, 625 cr. Pro: $35/mo, 2,250 cr. Gen-3 5s clip = 5 credits. Credits do not roll over. Check balance at app.runwayml.com/account.

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API 401 / 402 error

Header: Authorization: Bearer RUNWAYML_API_SECRET. Also required: X-Runway-Version: 2024-11-06. Generate key at app.runwayml.com/account/api. Error 402 = insufficient credits. Error 429 = rate limited (check Retry-After header).

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Image-to-video poor output

Prompt describes motion, not content ("camera slowly zooms in", "leaves rustle"). Use 16:9 images (1280x720 or 1920x1080). Minimum 640x480px, max 16MB. JPG/PNG/WebP only. Input image aspect ratio = output video aspect ratio.

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Act-One motion capture failing

Act-One requires: good front-facing lighting, face clearly visible, minimum 720p source video, no motion blur. Processing takes 5-15 minutes. Pro plan required for Act-One access.

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Export / download not working

Videos expire from Runway servers after 7 days. Download immediately after generation. If the download button fails: try Chrome or Firefox. Right-click the video and select "Save As". Safari can have download restrictions with certain file types.

Runway API quick reference

Text-to-video (Gen-3 Alpha Turbo)

# Step 1: Create task
curl -X POST "https://api.dev.runwayml.com/v1/text_to_video" \
  -H "Authorization: Bearer RUNWAYML_API_SECRET" \
  -H "Content-Type: application/json" \
  -H "X-Runway-Version: 2024-11-06" \
  -d '{
    "promptText": "A lone astronaut walks across a red desert at sunset",
    "model": "gen3a_turbo",
    "duration": 5,
    "ratio": "1280:720"
  }'
# Returns: { "id": "task_abc123", "status": "PENDING" }

# Step 2: Poll task status (every 5 seconds)
curl "https://api.dev.runwayml.com/v1/tasks/task_abc123" \
  -H "Authorization: Bearer RUNWAYML_API_SECRET" \
  -H "X-Runway-Version: 2024-11-06"
# When "status": "SUCCEEDED" => use output[0].url

X-Runway-Version header is required

All Runway API calls must include X-Runway-Version: 2024-11-06. Omitting it returns a 400 error. Check docs.dev.runwayml.com for the current version string.

Runway credit costs by feature

Feature	Credits	Notes
Gen-3 Alpha Turbo — 5s, 720p	5 cr	Fastest, most affordable
Gen-3 Alpha Turbo — 10s, 720p	10 cr
Gen-3 Alpha — 5s, 720p	10 cr	Higher quality than Turbo
Gen-3 Alpha — 10s, 720p	20 cr
4K Upscale	+10 cr	Per upscaled video
Act-One (motion capture)	Variable	Pro plan required

Free: 125 one-time only. Standard: $15/mo (625 cr). Pro: $35/mo (2,250 cr). Max: $95/mo (7,500 cr). Credits don't roll over.

Step-by-step fix

1

Check live Runway status

Visit prismix.dev/service/runway and runwaystatus.com. If Gen-3 component shows issues, the generation system is degraded — wait.
2

Fix Gen-3 generation stuck

Normal Gen-3 time: 30-120 seconds. Cancel and retry if stuck beyond 5 minutes. Avoid peak hours (14:00-22:00 UTC). Write prompts in English — Gen-3 is optimized for English. Remove celebrity names and explicit terms.
3

Fix credits exhausted

Runway free credits are 125 one-time only — they do NOT reset monthly. To continue: upgrade to Standard ($15/mo, 625 cr/mo) at app.runwayml.com/pricing. Paid credits also don't roll over between months.
4

Fix image-to-video output quality

Your prompt describes the motion (not the scene — the image handles that). Write: "the camera slowly zooms in", "subject's hair blows in the wind". Use 16:9 input images (1280×720 or 1920×1080). Minimum 640×480px, max 16MB, JPG/PNG/WebP.
5

Fix API errors

Required headers: Authorization: Bearer RUNWAYML_API_SECRET AND X-Runway-Version: 2024-11-06. Base URL: https://api.dev.runwayml.com/v1. API is async: POST creates the task, then poll GET /tasks/{id} every 5 seconds.

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Get alerted when Runway ML goes down

Star Runway on Prismix and get emailed the moment status changes. Free, no credit card.