Wan 2.6 Flash API Pricing: Silent 720p at $0.029/s

TL;DR

• Wan 2.6 Flash image-to-video (wan2.6-flash/image-to-video) bills per second, set by resolution and audio: silent 720p at $0.029/s ($0.145 for 5 s), audio 720p $0.0575/s, silent 1080P $0.043/s, audio 1080P $0.086/s.
• Durations are 5 / 10 / 15 s only; the output aspect follows the input image (portrait in, portrait out).
• Live on HiAPI: upload one image on the model page. New accounts get 200 free credits. API usage is in the guide.

Price table: four combinations

Tier	Per second	5 s	10 s	15 s	$10 yields (5 s)
720p silent (default)	$0.029	$0.145	$0.29	$0.435	68
720P · Sound On	$0.0575	$0.2875	$0.575	$0.8625	34
1080P · Sound Off	$0.043	$0.215	$0.43	$0.645	46
1080P · Sound On	$0.086	$0.43	$0.86	$1.29	23

HiAPI current prices, checked October 22, 2026. Relative to the default: audio doubles, 1080P is ~1.5×, both together ~3×. Failed tasks refund.

Real clips at all four combinations

There's no same-prompt-across-tiers set in the archive; the first three share one fox input image with different prompts, stated as-is:

Tier	Clip	Notes
720p silent $0.145	Fox →	1280×720 · 5 s · defaults
720p audio $0.2875	Morning fox →	1280×720 · 5 s · audio: true, same fox input, different prompt
1080P silent $0.215	Desert convertible →	1918×1080 · 5 s · different input
1080P audio $0.43	Fox 1080P →	1918×1080 · 5 s · fox input, yet another prompt

All real wan2.6-flash/image-to-video clips; same-input combinations are flagged, and prompt differences are stated — compare tiers, not compositions.

What you can see:

• Silent versus audio shows in the track: with audio on, ambience arrives with the picture (the morning fox carries forest sound).
• 720p versus 1080P shows in sharpness: fur and dust read crisper in the two 1080P clips.

Spending less

• Start on the default tier: silent 720p at $0.145 for 5 s — iterate composition and prompts here.
• Audio on demand: pass audio: true only when you want ambience (it doubles the rate); score in post otherwise.
• 1080P for finals only: draft at 720p and upgrade — silent 1080P is still just $0.215.
• Aspect is free: upload a portrait for vertical output; ratios never cost extra.

Compared with related i2v models (HiAPI prices, 720p per second)

Model	Silent	Audio	Notes
wan2.6-flash/image-to-video (this model)	$0.029	$0.0575	5/10/15 s; aspect follows image
wan2.7-video/image-to-video	$0.1	—	media input; 1080P $0.167
ltx-2.5-fast/image-to-video	$0.043	same	Free audio; 12 durations; 1080P $0.086
grok-imagine-1.5-lite/image-to-video	$0.043 (sound built in)	same	+$0.015 input-image fee per clip
grok-imagine-1.5/image-to-video	$0.0214	same	480p $0.0114

In the table, Grok Imagine 1.5 runs $0.0214/s at 720p, below Wan 2.6's $0.029/s.

Monthly budgets (5 s per clip)

Clips / month	720p silent	720p audio	1080P silent	1080P audio
100	$14.50	$28.75	$21.50	$43.00
500	$72.50	$143.75	$107.50	$215.00
1,000	$145.00	$287.50	$215.00	$430.00

Silent-heavy pipelines cost less: 800 silent 720p drafts plus 100 silent 1080P finals runs about $137.50 a month.

FAQ

Can I set any duration?

No — only 5, 10, or 15 seconds; other values return a 400.

Does the aspect follow the input?

Yes. No aspect parameter — portrait in gives portrait out, 3:4 gives 3:4.

How do I enable audio?

Pass audio: true explicitly; it bills at the Sound On rate.

How many clips does $10 buy?

About 68 at the default tier (720p silent, 5 s).

Do failures cost anything?

No. Validation rejections never bill.

Next: take one image and run a default-tier clip ($0.145 for 5 s); four scene templates are in the prompt guide.