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Model comparison
Sora 2 vs Runway Gen-4.5
Compare Sora 2 and Runway Gen-4.5 using the same provider-sourced video generation rubric. No mystery score and no invented benchmark ranking.
Facts checked September 4, 2026
Estimate your cost
Set your usage. Your estimate updates as you type.
Example: 8-second, 720p clips with audio. Models that do not support these settings will not receive an estimate.
How this estimate works
Estimates exclude taxes, tools, cache storage/writes, free allowances and custom discounts. Image estimates cover output only, not prompt or reference-image charges. Quality modes differ by model. Unlisted settings are not treated as free.
| Model | Access | Estimated total (USD) |
|---|---|---|
| Runway Gen-4.5Runway | Runway | No reviewed rate |
| Sora 2OpenAI | OpenAI | No reviewed rate |
Quick take
Sora 2
OpenAI's legacy synced-audio video model for short text- or image-guided clips—still documented, but approaching a permanent API shutdown.
Best for
- Evaluating an existing Sora integration
- Short synced-audio experiments before shutdown
- Planning a migration to another video provider
Watch out for
The API shutdown is imminent. Treat every new dependency on Sora 2 as temporary and export anything you need to keep.
Runway Gen-4.5
Runway's flagship developer video model for text- and image-guided clips, with professional formats and a predictable credit-per-second base rate.
Best for
- Editorial and post-production workflows
- Text- or image-led cinematic clips
- Teams already using Runway's media APIs
Watch out for
Format surcharges can exceed the base generation cost, and the provider does not publish one render-time number across settings.
Compare the published facts
Sora 2 vs Runway Gen-4.5
Values use each provider's own published units and limits. A blank means the provider did not publish a directly comparable value in the sources reviewed.
| Video generation | Sora 2 | Runway Gen-4.5 |
|---|---|---|
| Generation priceCurrent list price per generated second or the provider's closest billing unit. | $0.10 / generated second | 12 credits / sec = $0.12 / sec |
| Clip durationDocumented duration choices or maximum clip length. | 4, 8, or 12 seconds | 2–10 seconds |
| Maximum outputHighest provider-documented output resolution, with relevant constraints. | 720×1280 or 1280×720 | Endpoint and output-format dependent |
| Native audioWhether the endpoint generates synchronized audio with video. | Yes, synced audio | No native audio listed |
| Input modesSupported text, image, video, reference, or motion inputs. | Text or image to video | Text or image to video |
| Generation timeOnly shown when a provider publishes a range; not a Cody benchmark. | Not published | Not published |
How to choose
Compare the job, not the hype.
Start with the job you need to complete, then validate cost, access, and policy details on your exact provider route.
Sora 2
OpenAI says API inputs and outputs are not used for training by default. Standard abuse-monitoring and feature-specific storage controls apply until the service shuts down.
Provider and API links
Runway Gen-4.5
Data handling depends on the Runway plan and agreement. Review Runway's current terms, workspace controls, and any enterprise commitments before processing confidential media.
Provider and API links
Frequently asked questions
Sora 2 vs Runway Gen-4.5 FAQ
What is the main difference between Sora 2 and Runway Gen-4.5?
Sora 2: OpenAI's legacy synced-audio video model for short text- or image-guided clips—still documented, but approaching a permanent API shutdown. Runway Gen-4.5: Runway's flagship developer video model for text- and image-guided clips, with professional formats and a predictable credit-per-second base rate.
Should I choose Sora 2 or Runway Gen-4.5?
Consider Sora 2 when your priority is Evaluating an existing Sora integration. Consider Runway Gen-4.5 when your priority is Editorial and post-production workflows. Test both with your own data and provider route before committing.
Is this Sora 2 vs Runway Gen-4.5 comparison based on Cody benchmarks?
No. This comparison aligns provider-published facts for the Video generation category. It does not claim a universal winner or combine incompatible third-party benchmark scores.