Atlas vs Sora 2: which world model is better in 2026?

Verdict: Sora 2 is on its way out. OpenAI discontinued the Sora app on April 26, 2026 and will shut down the Sora API on September 24, 2026 (OpenAI Help). Atlas, announced September 1, 2026, represents where the category is going: longer, higher-resolution video with explicit camera control and real 3D output. But Atlas is early-access only, so anyone migrating off Sora needs a bridge. This independent comparison, not affiliated with either company, explains the differences and the practical path.

What each model is

Sora 2 launched on September 30, 2025 as OpenAI’s flagship text- and image-to-video model, with synchronised audio and a consumer app (OpenAI). Clips ran 15 to 25 seconds at 720p, or up to 1080p on Sora 2 Pro (eesel). Through the API it cost $0.10 per second of 720p output for sora-2 and $0.30 to $0.50 per second for sora-2-pro, with batch jobs at half price (eesel).

Atlas is World Labs’ omni world model: a multimodal autoregressive diffusion transformer that generates video up to 1440p and one minute along an explicit camera path, and reconstructs scenes from a few photos as point clouds and Gaussian splats (Superpower Daily). It is in early access for select partners with no published price (Implicator). Full background in what the Atlas world model is.

Video model vs world model

Sora 2 was often called a world simulator because it learned plausible physics from video. But it exposed only one interface: a prompt in, pixels out. The camera, the geometry and the persistence of objects were all implicit, and every generation started from scratch.

Atlas makes those things explicit. The camera path is an input. The scene is reconstructed as 3D data you can inspect and export. A second shot of the same scene is a second render of the same geometry, not a second guess. That is the difference between a video model and a world model, and it is why Atlas clips can run four times longer than Sora’s without drifting, at least according to World Labs’ self-reported preference studies.

Resolution, length and control

	Atlas	Sora 2
Max resolution	1440p	720p (Sora 2), 1080p (Pro)
Max length	60 s	25 s
Camera control	Explicit path input	Text description only
Audio	Not announced	Native, synchronised
3D output	Point clouds, Gaussian splats	None

Sources: Superpower Daily, eesel, OpenAI.

Two honest caveats. Sora 2 had audio and Atlas does not mention it. And Sora 2 was a mature product with a public API and known latency, while Atlas has published neither generation time nor hardware requirements.

Cost

Sora’s per-second pricing is the benchmark Atlas will be measured against when it gets a price. A 25-second sora-2 clip cost $2.50 at $0.10 per second; the same clip on sora-2-pro at 1080p cost $12.50 (eesel). A one-minute 1440p Atlas clip is more pixels than either, so expect a higher per-clip price if World Labs adopts per-second billing. For static worlds, World Labs’ current rate is 1,500 credits, about $1.20, per Marble world; see the pricing page.

What the Sora shutdown means for you

If you built on the Sora API, you have until September 24, 2026 (OpenAI Help). Three paths:

1. Move to another video API for cinematic clips with audio. MiniMax H3 and Gemini Omni Flash are the closest like-for-like replacements; see Atlas vs MiniMax H3.
2. Move to a world-first pipeline if your shots are of places rather than people. Generate the environment once with the World API, then render as many camera moves as you like. The Marble World API guide covers the flow, and the video to 3D world tool tracks when Atlas video input opens on this site.
3. Request Atlas early access if you are a studio with volume and can wait; see how to get Atlas early access.

Recommendations by use case

• Short social clips with dialogue and sound: a video model with audio, not Atlas.
• Product and architectural fly-throughs: Atlas when available; Marble world plus virtual camera today.
• Previs and repeatable shots: Atlas, because the camera path is explicit and repeatable.
• Anything needing a 3D asset afterwards: Atlas or Marble; Sora never produced one.
• Real-to-sim robotics: Atlas, per the robotics guide.

Latency and throughput

Sora 2 generations completed in minutes and the API supported batch jobs at half price, which mattered for volume users (eesel). World Labs has published no latency figures for Atlas; a one-minute 1440p sequence is far more work than a 25-second 720p clip, so expect longer waits. Plan any Atlas-based pipeline around asynchronous jobs with polling, the same pattern the World API guide recommends for Marble.

Migration checklist for Sora API users

If you are one of the teams affected by the September 24, 2026 API shutdown, the steps below keep the transition orderly.

1. Inventory your prompts by shot type. Separate clips that are about people and performance from clips that are about places and camera moves. The first group needs a video model; the second group is a candidate for a world-first pipeline.
2. Export everything you might reuse. Sora generations you have not downloaded will be unreachable after the shutdown (OpenAI Help).
3. Recreate reference environments as worlds. For recurring locations, generate a Marble world once via the World API and render new camera moves from it instead of regenerating the location every time.
4. Rebuild your cost model. Sora billed per second; Marble bills per world at 1,500 credits. A world that yields ten shots costs $1.20 total, which is a different economics from $0.10 per second per clip.
5. Abstract the provider. Wrap the generation call so that swapping Marble for Atlas later, or adding a video model for performance shots, is a configuration change. This site’s tools are built that way.
6. Join the Atlas waitlist if your volume justifies early access; see how to get Atlas early access.

Where Sora was still ahead

It would be dishonest to present Atlas as a strict upgrade. Sora 2 had native, synchronised audio, mature prompt adherence for people and actions, and a consumer app with a social feed (OpenAI). Atlas has none of those, and its strengths, geometry and camera control, matter only for spatial work. A dialogue-driven clip is not a world-model problem. For that category the live alternatives are covered in Atlas vs MiniMax H3.

Timeline

• September 30, 2025: Sora 2 released with audio and the Sora app.
• January 21, 2026: World Labs opens the World API for Marble.
• April 26, 2026: Sora app discontinued.
• September 1, 2026: Atlas announced in early access.
• September 24, 2026: Sora API shuts down.

Sources: OpenAI, OpenAI Help, World Labs, SiliconANGLE.

Bottom line

Sora 2 was the best-known video generator of 2025 and it is being retired. Atlas is the clearest signal of what replaces it for spatial work: camera control you can specify, geometry you can export, and minute-long 1440p sequences. Until Atlas opens up, the World API and a splat viewer get you most of the way. The broader field is mapped on the comparison hub, and the waitlist below sends one email when Atlas access changes.