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Gen-4.5

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runway/gen-4-5 · by Runway · Diffusion transformer (DiT)

Pricing — 1 offering(s)

Runway

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About this offering: Runway's Gen-4.5, its highest-quality Gen-4 model, for text-to-video and image-to-video. Runway's API charges 12 credits per second at $0.01 a credit, so $0.12 per second of video (Runway API pricing, checked 2026-10-11).

Standard

  • $0.01 / credit Current 2026-06-13 → present
    $0.01/credit is the flat pay-per-use rate on the Runway developer API…

    $0.01/credit is the flat pay-per-use rate on the Runway developer API (docs.dev.runwayml.com/guides/pricing/). credits_per_second=12 confirmed from API pricing table (gen4.5). Previous entry had credits_per_second=25 and usd_per_credit=$0.019 (both derived from subscription plan math) — corrected 2026-07-02. Effective rate: $0.12/second.

Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.

See how Gen-4.5 fits into a cost-aware routing setup

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Capability profile

How Gen-4.5 rates across core capability dimensions, with the task-level evidence behind each rating.

image to video quality Strong

Highest I2V quality in the Gen-4 family.

Prompt adherence Strong
temporal consistency Strong
motion quality Strong
native audio Weak

No audio generation.

Inference speed Weak

Significantly slower and more expensive than Gen-4 Turbo (2.4× the credits/second at $0.12/s vs $0.05/s).

clip duration ceiling Moderate

Max 10 seconds per clip.

cost efficiency Moderate
video editing Weak

T2V and I2V only via Runway developer API. Same note as Gen-4 Turbo: Runway character/style reference appears to be a consumer web-app feature; verify at docs.dev.runwayml.com if upgrading to moderate.

Ratings are estimated — limited independent data is available for this model.

Operator guidance

As of mid-2026, Seedance 2 Standard ($0.36/s) supersedes Gen-4.5 as the Runway quality flagship — it adds V2V, native audio, 4K output, and clips up to 15s. Gen-4.5 ($0.12/s, 12 credits × $0.01/credit) remains the choice when T2V+I2V quality is required but audio, V2V, and 4K are not needed — at 3× lower cost than Seedance 2 Standard (720p). Gen-4 Turbo ($0.05/s) for I2V-only at minimum cost.

Use cases

Limitations

Citations