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Runway Gen-4.5 / Aleph Explained (2026): specs, list price, what it is good for, where to use it

SinCoSphere EditorialUpdated 2026-10-14Verified 2026-09-12Video model
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Runway's in-house generation (Gen-4.5) and editing (Aleph) models.

Specs

Segment length2–10 s per generation (API, Gen-4.5)
Resolution720p output (API ratios 1280:720 / 720:1280); up to 4K via upscale
AudioAudio; custom voices (Pro+)
ReferencesCharacter reference, image-to-video
Intra-segment cutsSingle-shot
List priceApp: 60 credits per 5 s ≈ 720/min; Standard 625 credits/mo at $15. API: 12 credits/s at $0.01 per credit ($0.12/s)
Where to useRunway web, iOS / Android apps, API

Official docs ↗

Runway Gen-4.5 / Aleph vs other video models: seconds per generation

Published min–max; undisclosed models are not drawn
11 modelsHow we score ↗
  1. Seedance 2.0 / 2.54–30s
  2. Seedance 2.54–30s
  3. Wan 3.0 / 3.0 Prime2–30s
  4. Sora4–20s
  5. LTX-2.56–20s
  6. Vidu1–16s
  7. MiniMax Hailuo H34–15s
  8. Kling 3.0 / Omni3–15s
  9. PixVerse V61–15s
  10. Runway Gen-4.5 / Aleph2–10s
  11. Veo 3.14–8s
051015202530

Good for / caveats

Good for

Commercial-grade single shots and editing

Caveats

Expensive per minute; Standard and Pro credits reset monthly (Max rolls over up to one month)

Available in

Runway

FAQ

How much does Runway Gen-4.5 / Aleph cost?

App: 60 credits per 5 s ≈ 720/min; Standard 625 credits/mo at $15. API: 12 credits/s at $0.01 per credit ($0.12/s)

How long can one Runway Gen-4.5 / Aleph generation be?

2–10 s per generation (API, Gen-4.5) · 720p output (API ratios 1280:720 / 720:1280); up to 4K via upscale

Is Runway Gen-4.5 / Aleph good for AI short drama?

Good for: Commercial-grade single shots and editing. Caveat: Expensive per minute; Standard and Pro credits reset monthly (Max rolls over up to one month).

How do I use Runway Gen-4.5 / Aleph without coding?

Through platforms that expose it: Runway

Sources

Official pages opened while writing; current pricing and features are always as shown on the vendor site.