Figma AI Make Prototype vs Runway Act-3

“The interaction model here is exactly right: Make Prototype doesn't introduce a new surface or modal — it reads what's already on the canvas and adds connections back into the same noodle-and-arrow system Figma designers already know. That means the output is editable, not magic-boxed. The real craft decision that earns the ship is that it respects existing component and variant semantics rather than generating flat, dumb connections — hover states actually wire to their counterpart variant. My one pointed concern is error handling: when the AI misreads a layout ambiguity, the failure mode is silently wrong connections rather than a surfaced warning, which can torpedo a client demo if you don't sanity-check.”

“The output is not cinematic — you're getting sensible default easing curves and standard dissolve transitions, not bespoke motion direction. But that's actually the right call: the taste layer here is deliberately minimal, leaving the designer in control of anything that matters for brand expressiveness while automating the grunt work of wiring 40 frames together. The editing surface is the full Figma prototype panel, which means refinement is identical to hand-wiring, so there's no skill cliff when you need to fix something. The fingerprint is low: generated prototypes are indistinguishable from hand-built ones, which is the correct outcome for a tool like this — you want your design to be the thing with a signature, not the prototype scaffolding.”

“The specific output Act-3 targets — a character walking through a door in shot one and appearing in a hallway in shot two with the same face, hair physics, and gait — is the exact failure mode that makes AI video unusable for narrative work. I tested multi-shot sequences and the identity consistency is genuinely better than Gen-2; the face isn't drifting between cuts and clothing details hold across angles. The editing surface is still shallow — you're prompting, not directing — but Act-3 is the first Runway model where I'd consider building a scene around it rather than just generating B-roll.”

“The direct competitor here is ProtoPie and the half-hour a senior designer currently spends wiring flows before a usability test — and against that bar, Make Prototype wins clearly for standard linear flows. Where it breaks is conditional logic: any prototype that branches on user input, persists state, or simulates API responses is still entirely manual, and that covers maybe 40% of real usability test scenarios. What kills this in 12 months isn't a competitor — it's scope creep from Figma's own roadmap; if they ship smart-animate improvements and variable-aware connections, this feature either grows into something genuinely powerful or gets quietly deprecated as a stepping stone. I'm shipping it because the 60% it handles well represents hours of saved work per week for a design team.”

“Identity drift in AI video is a real, documented problem and not a made-up use case, so credit where it's due — Act-3 is solving something that actually blocks professional adoption. The competitor to name here is Kling 2.0 and Sora, both of which are making the same consistency claims on the same timeline. What kills this in 12 months is not a competitor but OpenAI shipping Sora with character consistency natively into the ChatGPT workflow, making Runway's API pricing look expensive for the same output quality. Act-3 ships because the problem is real; it would earn a higher score if Runway published a methodology for how they measure identity consistency instead of asking us to take the blog post at face value.”

“The job-to-be-done is precise: 'wire up a prototype fast enough that I can test it today instead of tomorrow,' and Make Prototype nails that single job without trying to also be a motion design tool or a handoff tool. Onboarding is essentially zero — if you've used Figma's prototype panel before, you invoke this from a right-click or command bar and the connections appear; there's no configuration screen. The completeness question is the honest limitation: you can't fully switch off manual prototyping because anything involving conditionals or data still requires hand-wiring, so it's a time-saver within an existing workflow rather than a workflow replacement. The specific product decision that earns the ship is that the output writes back into Figma's native connection format rather than a proprietary AI layer — your prototype remains yours and is fully editable without touching the AI again.”

“The primitive here is a video diffusion model with a character embedding that persists a latent identity representation across generation calls — that's a real engineering problem and not a trivial API wrapper. But the DX bet Runway made is to lock this behind the Gen-3 subscription tier with no standalone API pricing transparency, and the API docs for Act-3 specifically don't tell me what the input contract looks like for character reference images versus text prompts. The moment of truth for a developer is 'can I integrate this into my pipeline in an afternoon' and the answer right now is 'depends on whether you can reverse-engineer the reference image format from the playground.' Ship when the API surface is documented to the same standard as the model capability claims.”

“Act-3's thesis is falsifiable: within three years, long-form AI video production will be shot-based rather than clip-based, meaning identity persistence across a session is the load-bearing primitive, not per-clip quality. That bet is credible — every serious video workflow is multi-shot and every current AI tool breaks at the cut. The second-order effect if Act-3 works is that it collapses the cost of pre-production animatics, meaning studios greenlight more concepts faster and the bottleneck moves from production to creative direction. Runway is riding the trend of professional video teams adopting AI not as a novelty but as a production tool — they're on-time to that shift, not early. The future state where this is infrastructure is a world where a director references a character once and the model holds it for a hundred shots; Act-3 is the first credible step toward that workflow.”