How this page was reviewed
Written and reviewed by the Postraid editorial team. We compared the linked source page with the provider information and dated tables shown here. This is editorial guidance, not a hands-on product test unless the page explicitly says otherwise. Last updated .
The short version
The Imagine API has distinct image and video models. Current Video 1.5 documentation supports text/image generation with audio and mode-dependent resolution, priced separately from consumer subscriptions.
Grok Imagine: every specification in context
| Specification | Verified scope |
|---|---|
| Maker | xAI / current SpaceXAI documentation |
| Released | Video 1.5 is documented; historical rollout days are not re-verified here. |
| Max clip length | Up to 15 seconds for generation; extension is a separate route. |
| Resolution | Video 1.5: up to 1080p for text/image input; reference mode capped at 720p. |
| Native audio | Audio by default; silent output and preset voices available on documented routes. |
| Modes | Text/image generation, references, editing and extension have distinct request modes. |
| Consistency | Reference guidance is documented; verify each product or character result. |
| Speed | No fixed latency promise; use a representative queued job. |
| Access | Consumer access and the developer API are different offers; verify each separately. |
| Notable | 1.5 API output: $0.08/second at 480p, $0.14 at 720p, $0.25 at 1080p; input charges can apply. |
The production decision
The Imagine API has distinct image and video models. Current Video 1.5 documentation supports text/image generation with audio and mode-dependent resolution, priced separately from consumer subscriptions.
Treat the named version as a specific tool, not a complete content strategy. First decide what the audience needs to understand and what the finished asset must demonstrate. A visually striking result can still fail if it changes the product, obscures the message or needs permissions you do not have. Keep these acceptance criteria beside the provider specifications so the technical options serve the brief. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
Prepare a useful first test
Begin with the intended audience and a useful idea, not the assumption that a generator’s connection to a social brand guarantees reach there. A fictional product-launch scene can work as a visual explanation, while a news-like synthetic clip can mislead viewers if its status is unclear. Keep fictional illustrations distinct from evidence of events or customer experiences.
Specify whether the source image must become the first frame or merely guide the subject. Those are different creative intentions and different API modes. Keep one mode active in a request and inspect the result against that purpose. Changing from first-frame animation to reference guidance can also change available resolution, so check the output file rather than trusting the original design dimensions.
Check the output and the route
For spoken content, evaluate the script, pacing and voice independently of visual quality. Current documentation distinguishes preset voices from access to custom audio references. Do not promise arbitrary voice cloning from the existence of a voice field. Listen to the export in full and review names, product claims and any pronunciation that could change the meaning.
A brand-safety review should focus on the actual workflow and output, not unsupported conclusions about every user of a product. Consumer settings discussed in the reference, including Spicy Mode, are not treated here as business API features or a recommended campaign workflow. Use appropriate content controls, accurate labeling and rights-cleared inputs. Confirm the applicable commercial terms before advertising with the finished material.
Evaluate approved results, not impressive previews
Create a short review sheet with separate checks for subject accuracy, movement, readability, sound and the intended message. Mark each issue as acceptable, editable or a reason to reject the take. Have someone who did not write the prompt explain what they think the clip shows. Their answer exposes ambiguity that a technically successful generation will not identify. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
Record the input, selected version, request settings, elapsed production time and any charged usage for each attempt. Include rejected takes when estimating a finished asset’s cost. Compare candidates with the same brief and acceptance threshold; do not turn one favorable sample into an overall model ranking. A still-image task needs image criteria rather than invented video or audio capabilities. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
Review the actual exported file on the destination layout. Portrait video placements on Postraid use a 9:16 frame, but not every source mode generates that shape natively. Cropping can remove a product or a caption, while upscaling does not repair an incorrect detail. Keep an editable master and check sound, captions and the last frame before scheduling anything. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
Where this fits beside Postraid
Postraid’s current workflow centers on product-context reactions, memes and carousels, with review and plan-limited publishing. This guide does not add an external model to your Postraid subscription or promise a direct import, custom likeness generator, public API or automatic revenue attribution. Confirm the supported input and format in the current product before designing a handoff around it. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
Keep the creative brief portable even when production tools differ. Store the approved product facts, audience, hook, rights and intended next step separately from a model prompt. That gives the team a stable source of truth when a provider changes versions or a scene needs ordinary editing. Publish only the approved deliverable through a supported account and format, then assess the response in the destination’s analytics. For the Grok Imagine guide, keep the decision tied to the product brief, the usable output, and the next publishing step.
A few useful answers.
Does an X or Grok subscription include this API production?
Do not assume it does. The developer pricing table meters model output and some inputs separately. Consumer trials, regional access and subscription entitlements should be checked in their own offer. For a campaign, budget the exact model and resolution, then include editing and publishing; generation is not proof that the content has been posted.
Which cost and duration should I use in a production estimate?
Use the exact model route, input mode, resolution and duration shown in the specification table and current provider documentation. Include charged references, retries and any required editing. A consumer subscription, developer API and third-party wrapper can be separate purchases. When a current quote is not verified, obtain it before committing; an archived price is not an entitlement. Use the Grok Imagine guide as the starting point, then confirm any plan or platform detail that affects your decision.
Does a generated asset automatically clear commercial use?
No. Review the applicable service or model license and the permissions for supplied images, footage, voices and likenesses. Check the destination’s disclosure and advertising rules for the actual use. Technical access, a paid account and the absence of a visible logo do not establish the same thing. Preserve relevant provenance and approval records with the final asset. Use the Grok Imagine guide as the starting point, then confirm any plan or platform detail that affects your decision.
How do I know when the result is ready to publish?
The message should be clear without the original prompt, product details must be accurate, and any fictional or synthetic depiction should not be presented as customer evidence. Preview the finished dimensions, captions and audio on the intended placement. Reviewers should approve the exported version, not an earlier preview. Generation, approval and publication are separate steps. Use the Grok Imagine guide as the starting point, then confirm any plan or platform detail that affects your decision.