Wan 3.0 Spicy vs Wan 2.7 Uncensored: Choosing a Generation

Key Takeaways

• Wan 3.0 Spicy runs longer (2-30s vs 2-15s) and wider (480p-1080p vs 720p/1080p only) than Wan 2.7 Uncensored, and adds audio_enable — but it dropped negative_prompt entirely across all three endpoints.
• Verified on the console today: both generations land on the same $0.09/s at 720p, through two unrelated, time-limited promos (10% off Wan 2.7 Uncensored, 33% off Wan 3.0 Spicy) — a coincidence, not a shared rate.
• This is a generation-level choice for a brand-new project, not a migration question — the linked i2v-specific comparison covers that instead.

Wan 3.0 Spicy vs Wan 2.7 i2v Spicy: Should You Migrate? answers a narrower question: whether an existing i2v Spicy pipeline is worth swapping over. This piece is for a different reader — someone starting a new NSFW video project from scratch, weighing the full t2v/i2v/ref2v triplet on each side, not one endpoint. Neither generation wins outright; each trades something real for something else.

The Structural Split

alibaba/wan-2.7-{t2v,i2v,ref2v}-uncensored caps out at 720p/1080p, 2-15 seconds, but keeps negative_prompt on every one of its three endpoints. alibaba/wan-3.0-{t2v,i2v,ref2v}-spicy stretches to 480p-1080p, 2-30 seconds, adds audio_enable and a default-on prompt_expansion_enable, and gives ref2v room for 10 reference images / 5 videos / 5 audios versus Wan 2.7 Uncensored's 3/3 — but its schema has no negative_prompt field anywhere. (For that ref2v reference set on its own, see the Wan 3.0 Spicy ref2v character-consistency guide.)

What Each Ceiling Actually Buys You

Fifteen seconds at 720p suits one suggestive beat — a slow undress pan, a lingerie reveal — where negative_prompt holds the shot to "no visible tattoos, no clutter" without a retry. Thirty seconds at 1080p supports a scene with a build: foreplay escalating into an explicit act in one continuous take, where extra ref2v reference slots matter more than a negative prompt, since a bigger set keeps bodies and faces steady across a longer clip.

Price Per Second, Verified Today

Checked live on both console Pricing blocks today: Wan 2.7 Uncensored's 10% promo puts 720p at $0.09/s (from a $0.10/s list rate), 1080p at $0.135/s. Wan 3.0 Spicy's deeper 33% promo puts 480p at $0.045/s, 720p at $0.09/s too (from a ~$0.1345/s list rate), 1080p at $0.18/s. Same $0.09/s at 720p right now, from two unrelated promos — not a shared policy, just today's overlap. Both discounts are time-limited; recheck the console before committing a budget.

Which Generation to Start On

Pick Wan 2.7 Uncensored when the project needs negative_prompt control more than extra length or resolution range — shorter, tightly-directed clips where excluding one specific unwanted element matters. Pick Wan 3.0 Spicy when the brief calls for longer scenes, cheap 480p drafts for fast iteration, audio, or a large ref2v reference set. A new project isn't locked into either path: both generations share one Siray API key, so testing both before committing is a model-name change, not new integration work.

Both sit inside the same Siray uncensored generation catalog, and teams retiring Wan 2.6 entirely can start from the Wan 2.6 to Wan 3.0 migration checklist for the parts of this decision that aren't NSFW-specific.

Developer Notes

Both families take the same request shape behind the same API key. Switching a new build from one generation to the other mid-project is a model string change, not a re-integration.

FAQ

Does Wan 3.0 Spicy have any equivalent to negative_prompt?

No. Its schema has no negative_prompt field on t2v, i2v, or ref2v. The closest lever is a more specific prompt and, on ref2v, a larger reference set.

Is Wan 3.0 Spicy always cheaper than Wan 2.7 Uncensored?

Not structurally — at 720p they're priced identically today. The gap opens at 480p, where only Wan 3.0 Spicy runs, and at longer durations, where its 30-second ceiling gives more room per request.

Create your free Siray account and test both generations against the same brief before committing a new project to one.

Compliance: Siray is committed to responsible AI use. All content generated through the platform must comply with applicable laws. Siray maintains zero tolerance for CSAM and any illegal content. Uncensored generation capabilities are provided exclusively for lawful adult content creation by and for consenting adults aged 18 and over.