Model Comparison Updated July 13, 2026 - 12 min read

Seedream 5 vs Wan 2.7 vs Nano Banana 2: price, speed, quality and content filters

Seedream 5, Wan 2.7 Image and Nano Banana 2 are three of the most capable image models available in 2026, but they solve different problems. This guide compares the versions available in VeilPix for generation, editing and multi-image composition.

The short answer

Choose Nano Banana 2 for the strongest all-around prompt understanding, accurate text, rapid iteration and reference consistency.
Choose Seedream 5 for design-heavy compositions, rich stylization, multilingual layouts and precise image editing. Lite reaches 4K; Pro emphasizes reasoning and control.
Choose Wan 2.7 for inexpensive high-volume generation, multi-image work and a fast standard tier. Pro adds 4K text-to-image output.
Choose VeilPix After Dark when an age-verified workflow needs supported safety checkers relaxed. Seedream 5 and Wan 2.7 can be more permissive with mild adult content than Nano Banana 2, but model and provider policies still apply.

Feature comparison

Model	Best for	VeilPix output	References	Typical speed
Nano Banana 2	General-purpose generation, text, edits, grounded visuals	1K, 2K, 4K	Up to 10 objects and 4 characters in Google's documented workflow	Fast; designed for interactive, high-throughput work
Seedream 5 Lite	Creative direction, design, high-resolution output	2K, 4K	Multi-image generation and editing	Reasoning-heavy; quality prioritized over raw speed
Seedream 5 Pro	Complex layouts, precision editing, realistic portraits	1K, 2K	Up to 10 reference images	Usually slower than lightweight generation modes
Wan 2.7	Fast volume work, image sets, multi-image editing	1K, 2K	Up to 9 input images in official Pro editing docs	Standard is explicitly positioned as the faster tier
Wan 2.7 Pro	4K text-to-image and production assets	4K	Multi-image generation and editing	Slower than standard, especially with thinking enabled

Speed labels describe model positioning, not a guaranteed render time. Queue load, prompt complexity, reference count and resolution can materially change latency.

Pricing: official APIs and Fal.ai versus VeilPix

Official direct API prices are not directly comparable across every model because vendors use different regional pricing, token billing and batch discounts. The table below uses first-party standard on-demand prices where available and Fal.ai for Seedream 5, then compares them with VeilPix's 100-credit pack at $6.99, or $0.0699 per credit. VeilPix now supports fractional image credits, so lower-cost tiers are no longer rounded up to a full credit.

Model and output	Comparison API rate	VeilPix credits	VeilPix at 100-credit rate
Nano Banana 2 1K	$0.067 official	0.66	$0.0461, about 31% lower
Nano Banana 2 2K	$0.101 official	0.98	$0.0685, about 32% lower
Nano Banana 2 4K	$0.151	2	$0.1398, about 7% lower
Seedream 5 Lite 2K/4K	$0.035 on Fal.ai	0.45	$0.0315, about 10% lower
Seedream 5 Pro 1K	$0.0675 on Fal.ai	0.57	$0.0398, about 41% lower
Seedream 5 Pro 2K	$0.135 on Fal.ai	2	$0.1398
Wan 2.7 standard	$0.03 official	0.40	$0.0280, about 7% lower
Wan 2.7 Pro 4K	$0.075 official	0.98	$0.0685, about 9% lower

VeilPix prices each low-cost image tier to preserve its standard margin, then rounds up only to the nearest hundredth of a credit. Tiers whose underlying cost is above the fractional threshold keep whole-credit pricing. Multi-image Seedream edits can cost slightly more because additional reference images are billed separately. The benefit is also operational: one balance and one interface cover all three model families, with no separate API accounts or infrastructure.

Image quality and prompt following

Nano Banana 2: the best all-around default

Google positions Gemini 3.1 Flash Image, better known as Nano Banana 2, as its balance of intelligence, cost and latency. It supports 1K through 4K output, web and image-search grounding, advanced text rendering and multi-reference composition. It is the safest starting point when a job combines people, products, text and detailed instructions.

Its strongest advantage is predictable instruction following. For product mockups, posters, menus, diagrams and edits that must preserve recognizable subjects, Nano Banana 2 usually needs fewer corrective passes.

Seedream 5: deeper visual reasoning and design control

ByteDance describes Seedream 5 Lite's core improvement as deeper understanding and reasoning rather than a simple resolution or speed increase. That distinction matters. Seedream is especially compelling for editorial layouts, stylized campaigns, multilingual typography, visual explanations and edits where the model must infer design intent.

In VeilPix, Lite exposes 2K and 4K output, while Pro exposes 1K and 2K. Both support eight practical aspect ratios and PNG or JPEG output. Pro is the better choice for precision edits and complex scenes; Lite is the more economical route to high-resolution generation.

Wan 2.7: flexible production at volume

Wan 2.7 supports text-to-image, image sets, editing and multi-image references. Alibaba's standard model is the faster, lower-resolution option, while Pro adds 4K text-to-image output and stronger production positioning. Its image-set and reference workflows make it useful for campaigns that need multiple related assets rather than one hero image.

Wan can be less consistent than Nano Banana 2 on intricate typography or highly constrained edits, but its throughput, multi-image features and low official base price make it a strong workhorse.

Content filtering and mild NSFW workflows

No reputable model is literally uncensored. All three remain subject to law, platform rules and non-adjustable protections for core harms. The practical difference is how aggressively borderline adult material is blocked.

Nano Banana 2 is the strictest of the three. Google exposes adjustable safety categories in the Gemini API, but the model also has built-in protections and Google's prohibited-use policy disallows sexually explicit content created for sexual gratification.
Seedream 5 and Wan 2.7 can be more permissive for mild adult content when an API integration supports disabling its optional NSFW checker. Results are still not guaranteed, and explicit or prohibited material may be refused upstream.
VeilPix After Dark is limited to age-verified accounts. Purchasing credits provides the verification step; users can then enable After Dark for direct access to supported model APIs with optional safety checkers relaxed. This does not bypass model rules or legal restrictions.

For boudoir, swimwear, figure studies or other lawful mature creative work, Seedream 5 or Wan 2.7 is usually the more practical first attempt. For mainstream commercial work involving sensitive imagery, Nano Banana 2's stricter behavior may be preferable.

Which model should you choose?

Choose Nano Banana 2

When prompt accuracy, readable text, identity consistency and quick iteration matter most.

Choose Seedream 5

When the brief is visual, editorial or design-heavy, or when a lawful mature workflow needs more latitude.

Choose Wan 2.7

When you need fast volume, image sets, multi-reference work or economical 4K production.

The most reliable workflow is often mixed: develop concepts quickly in Wan, solve difficult layout or styling problems in Seedream, then use Nano Banana 2 for instruction-sensitive edits. VeilPix keeps all three in the same editor, so switching models does not mean rebuilding the workflow.

Research notes and sources

Prices and capabilities were checked on July 13, 2026. API prices change, regional rates can differ and batch pricing is excluded from the main comparison.