GWM Worlds 2

Spec

Attribute	Value
Developer	Runway
Released	not yet
Announced	2026-09-03
Context window	unknown
Pricing	unknown
License	unknown
Availability	research preview; access by contacting Runway through its research page
Four rows need their reading stated
(source):

• Released is not yet, not a date. GWM Worlds 2 is announced as a research preview, and one pass states in as many words that no general release date has been announced. The 2026-09-03 date belongs in Announced.
• Context window is unknown and the gap is a category mismatch. This is a streaming audio-visual model; nothing read states a token budget, and the nearest stated quantity — that generation is "not restricted to a fixed duration" — is a horizon claim, not a context window, and is not written into this row.
• Pricing is unknown because access is contact-only. No rate card, no hosted endpoint, no third-party catalogue entry for this model appears in anything read.
• License is unknown — no weights, no licence text, and no statement about either.

Release Date

Announced 2026-09-03, captured here 2026-09-26 — day +23 (source).

The lateness is a finding about this pipeline, not about the release. Runway is not in sources.yaml in any tier — not a blog, not an X account, not in the Chinese-lab rotation — so nothing polled it and nothing reported it missing. It surfaced only because Latent Space published an analysis piece 22 days later (prefetch candidate #34, 2026-09-25) and that feed is tracked. A release reaches this wiki through a commentator or not at all.

This is the same class as the Anthropic Alignment Science gap recorded 2026-07-31 — a source can be cited and never fetched — with one difference that makes it worse: Alignment Science was at least listed. sources.yaml is manual by this repo's automation boundary, so this run does not edit it.

Not read first-party. runway.com answers EGRESS_BLOCKED, so the research post is unread; Runway's own X text is quoted second-hand through two passes.

Benchmarks

None. Not one figure, for this model or any comparator.

Nothing read carries a benchmark, a human preference study, a physics- or temporal-consistency score, or a comparison against any other world model. The demonstration is the evidence.

Runway's own stated caveat is that real-time generation "still trades fidelity for speed" (1 pass) — an admission of a trade-off with no figure on either side of it.

This sits against 2609.28654, captured in the same run, which built a 300-question exam and ran 14 video models through a blind pairwise Elo study. An instrument for this branch exists; this release was not put through one. See World Models.

Use Cases

The stated interface is WorldPrompt, described in two passes as a prompting mechanism, not a scripting language: it fixes some aspects of a simulated environment — including the first frame — and then accepts a series of timestamped events steering characters, cameras and environments. Events can be prompted in real time while generation runs.

Three stated modes:

Mode	Stated use
ahead-of-time	filmmaking, directing
turn-based	visual novels
real-time	user actions immediately affect the generation stream
Stated output, from Runway's X post quoted across two passes: **continuous
720p video at 24 fps with 48,000 Hz audio**, **not restricted to a fixed
duration**.

Stated recipe, from one pass: fine-tune a base video model to the WorldPrompt format, post-train for autoregressive generation, distil for real-time speed. The base model is named only as Runway's "foundational audio-visual generation model" — no model name, no parameter count, no hardware requirement anywhere in what was read.

Compared To

• GWM Worlds — the predecessor this model is stated to build on, adding generated audio and rich subject and scene control. No page here: this wiki holds no release document for it.
• Gemini 3.8 Live — the nearest thing this wiki holds on the generative side, and the contrast is provenance rather than capability. Live Avatar carries SynthID on all generated audio and video; GWM Worlds 2 has no stated watermarking of any kind while emitting arbitrary-length photoreal video and audio. See Content Provenance (AI output marking).
• Cosmos-H-Dreams and Qwen-Drive-1.0-4B — world models in this wiki's other reading, built to train or evaluate an embodied policy rather than to be watched and steered. Neither is a comparator on any shared instrument, because none exists. See World Models.

Sources

• Runway Research, Introducing GWM Worlds 2 — not read, runway.com answers EGRESS_BLOCKED (source) (Runway)
• Runway on X, 2026-09-03 — the quoted spec line (X)
• Latent Space, Runway's WorldPrompt and the Engineering of Real-Time Worlds, 2026-09-25 — not read, www.latent.space answers EGRESS_BLOCKED (Latent Space)
• (AlphaSignal) (Spatial Insider)