{"slug":"world-labs-marble","name":"World Labs Marble","domain":"worldlabs.ai","verdict":"As of 2026-07-15, ChatGPT, Claude, Gemini, Grok collectively rank World Labs Marble first for world model api. Source: https://modelsagree.com/product/world-labs-marble (modelsagree.com, CC BY 4.0).","best_rank":1,"categories":1,"brief":{"category":"best-world-model-api","title":"Best world model API","rank":1,"of":11,"top":null,"day":"2026-07-16","why":[{"t":"Persistent, navigable 3D worlds","m":["ChatGPT","Gemini","Grok","Claude"],"q":"persistent, navigable 3D worlds"},{"t":"Text, image, or video inputs","m":["ChatGPT","Gemini","Grok","Claude"],"q":"text, image, or video inputs"},{"t":"Strong spatial consistency","m":["Gemini","Grok"],"q":"strong spatial consistency"},{"t":"Web rendering and exportable spatial assets","m":["ChatGPT","Grok","Claude"],"q":"web rendering and exportable spatial assets"}],"gap":[],"fix":[{"t":"No dynamics, physics, or agent interaction","m":["ChatGPT","Claude"],"q":"no dynamics, physics, or agent interaction"},{"t":"Programmatic/API access is much less mature","m":["Claude"],"q":"programmatic/API access is much less mature than the web app"},{"t":"Commercial pricing and compute costs","m":["Gemini","Grok"],"q":"Commercial pricing and potential compute costs"}]},"entries":[{"slug":"best-world-model-api","title":"Best world model API","rank":1,"of":11,"score":19,"appearances":4,"modelRanks":{"ChatGPT":1,"Claude":2,"Gemini":1,"Grok":1},"reason":"Best overall developer option: generates persistent, navigable 3D worlds from text, images, panoramas, video, or multi-view inputs, with web rendering and exportable spatial assets","reasons":[{"model":"ChatGPT","reason":"Best overall developer option: generates persistent, navigable 3D worlds from text, images, panoramas, video, or multi-view inputs, with web rendering and exportable spatial assets"},{"model":"Gemini","reason":"Leads in spatial intelligence by generating persistent, geometrically consistent 3D environments from text, image, or video inputs, enabling programmatic integration into games and simulations."},{"model":"Grok","reason":"Leading public API for generating persistent, navigable, high-fidelity 3D worlds from text/images/video/panoramas; strong spatial consistency, editability, and browser-based exploration make it highly practical for developers/creators building interactive apps/simulations; multimodal strengths and real-world usability edge it out."},{"model":"Claude","reason":"The first commercially shipping generative-3D-environment product that fits real pipelines — text/image/video prompts to persistent, explorable Gaussian-splat worlds with mesh/splat export into Unity, Unreal, and web viewers, plus editing and expansion tools; for anyone who needs an actual 3D scene artifact rather than a video, nothing else commercial comes close."}],"fixes":[{"model":"ChatGPT","fix":"Gaussian-splat-style worlds lack dependable object physics and game-engine-grade geometry"},{"model":"Claude","fix":"Worlds are static geometry — no dynamics, physics, or agent interaction — and programmatic/API access is much less mature than the web app, so it's a scene generator, not an interactive simulator."},{"model":"Gemini","fix":"Operating as a proprietary, credit-based commercial API makes it expensive and dependent on cloud connectivity."},{"model":"Grok","fix":"Commercial pricing and potential compute costs limit heavy local/self-hosted use (not ideal for fully open-source or low-budget offline workflows)."}],"updated":"2026-07-15","api":"https://modelsagree.com/api/v1/best/best-world-model-api.json"}],"page":"https://modelsagree.com/product/world-labs-marble","check":"https://modelsagree.com/check?q=World%20Labs%20Marble","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}