Hedra vs Elyumfor Seedance 2.5
Hedra bills Seedance 2.5 from 14.85 cents per second on the API, while Elyum previews every take free and charges only the ones you keep.
Seedance 2.5 is ByteDance's video model, released July 31, 2026. It is built for photoreal footage with textures, skin, lighting, and camera that hold for a full take, plus native audio generated with the picture rather than as a second pass. On the Seedance 2.5 page the routes are text to video, image to video, reference to video, and video editing. Duration is 4 to 30 seconds in one pass, which doubles Seedance 2.0's 15-second native ceiling. You can lock faces, products, locations, and style with up to 30 references. The job it actually wins is a 30-second photoreal ad with a pile of refs.
The model weights are the same vendor model. The bill is not. Hedra's all-models catalog lists Seedance 2.5 as reference-driven video up to 30 seconds at 1080p with native audio, from 14.85 cents per second via the API. Hedra does not publish a studio credit rate for this model. Elyum lists 8, 19.2, and 26 credits per second at 480p, 720p, and 1080p (1 credit = $0.01), and credits move only when you keep a take. A failed generation is never charged. Hedra has a Generation History & Credit Refunds page, but exact terms were not independently confirmed. Trustpilot reviewers wrote that artifacted outputs still consumed credits.
Hedra is the better desk if you also need Character-3 talking portraits or a Teams plan with SSO. Elyum does not ship a timeline editor, stock footage, avatars, a mobile app, or team seats. Compare Hedra as an alternative if those gaps matter more than keep-or-kill billing. Same model, other hosts: Higgsfield vs Elyum for Seedance 2.5.
Seedance 2.5 on Hedra
Hedra offers Seedance 2.5 as reference-driven video up to 30 seconds at 1080p with native audio. Hedra's pricing page lists Free (100 one-time credits), Basic at $15/mo (1,500 credits), Creator at $30/mo (5,400), and Professional or Teams at $75/mo (14,400). Research does not say which plan opens Seedance 2.5. The only published Seedance 2.5 rate is the API floor, from 14.85 cents per second. Monthly subscription credits expire at cycle end and do not roll over.
A bad render on Hedra is the unclear part. Hedra documents Generation History & Credit Refunds, but those exact terms were not independently fetched. A Trustpilot reviewer wrote that credits were charged even when the video had visible artifacts, and that refund requests went unanswered for a long time. Free-tier output is reported by third parties as watermarked and not licensed for commercial use (not confirmed on Hedra's own free-tier copy). Paid plans from Basic through Enterprise list commercial use, and paid output is not watermarked.
Seedance 2.5 on Elyum
On Elyum, Seedance 2.5 runs 4 to 30 seconds with native audio at three listed rates on Elyum pricing: 480p at 8 credits per second (5s = 40 credits = $0.40; 15s = 120 credits = $1.20), 720p at 19 credits per second (5s = 95 credits = $0.95; 15s = 285 credits = $2.85), and 1080p at 26 credits per second (5s = 130 credits = $1.30; 15s = 390 credits = $3.90). Routes are text to video, image to video, reference to video, and video editing.
Every render comes back as a free preview. You KEEP the takes you want (that is the only moment credits are charged) or KILL the rest for a full automatic refund. A failed generation is never charged. Kills are metered on the Free plan (one kill a month); paid plans kill freely. Kept files download at full quality with no watermark. Commercial use is included. Same model from Claude, ChatGPT, or Cursor through the MCP server or the REST API.
What a Seedance 2.5 take costs
| Scenario | Hedra | Elyum |
|---|---|---|
| One 5s take you keep | API from 5 × 14.85¢ = 74.25¢ ($0.74). Studio credits not published. | 480p: 5 × 8 = 40 credits ($0.40). 720p: 96 ($0.96). 1080p: 128 ($1.28). |
| Ten 5s takes, keep two | If all 10 bill at the API floor, 10 × 5 × 14.85¢ = $7.43. Studio rate and refunds not published. | Only keeps bill. 2 × 130 credits = 260 credits ($2.60) at 1080p 5s. |
| A failed generation | Exact refund terms not independently confirmed. Trustpilot reviewers report charges for artifacts. | $0. Failed generations are never charged. |
| Monthly plan to access the model | Free 100 credits exists. Paid from Basic $15/mo. Plan required for Seedance 2.5 not published. | Free plan, up to 150 credits once (our algorithm may grant them), no card. Plus $9/mo, Pro $29/mo, Ultra $69/mo. |
| Watermark on the file | Paid: none. Free tier reported watermarked (third-party, not confirmed on Hedra's copy). | No watermark on kept takes, including Free keeps. |
| One 15s 1080p take you keep | API from 15 × 14.85¢ = 222.75¢ ($2.23). Studio credits not published. | 15 × 25.6 = 390 credits ($3.90). |
Elyum: 1 credit = $0.01, charged only when you keep a take. Hedra figures from its own pricing pages and independent reviews, verified 2026-09-07; sources at the end. Full rate card on the Seedance 2.5 page.
Where the two differ
Hedra publishes Seedance 2.5 from 14.85 cents per second on the API. Studio credits per second for this model are not published, and Hedra's cents-per-credit figure is unpublished. Elyum is 8 / 19.2 / 26 credits per second at 480p / 720p / 1080p (1 credit = $0.01).
On Elyum, a kill refunds in full and a failed generation is never charged. Free plan: one kill a month; paid plans kill freely. Hedra has a Generation History & Credit Refunds page; exact terms were not independently confirmed. Trustpilot reviewers report artifacted videos still consuming credits.
Both list Seedance 2.5 up to 30 seconds at 1080p with native audio. Elyum also publishes 480p and 720p rates and a 4-second minimum. Hedra's catalog copy for this model does not list a 480p rate or a minimum duration.
Hedra ships API v3 and an MCP server, pay-per-use separate from subscription credits. Elyum uses one credit balance from the web studio, MCP, and REST API. If you also run Wan 3.0, see Hedra vs Elyum for Wan 3.0.
Hedra paid plans list commercial use and no watermark. Free-tier output is reported watermarked and not commercially licensed (third-party). Monthly Hedra subscription credits expire and do not roll over. Elyum kept takes download clean, no watermark, commercial use included.
Hedra's own Character-3 talking-avatar model is the reason many people are already there, plus Teams and Enterprise (SSO, Slack, private deployments). Elyum does not have a timeline editor, stock footage, avatars, a mobile app, team seats, or a community feed.
Pick Hedra when
- API floor of 14.85¢/sec can undercut Elyum 1080p (25.6¢/sec) if you generate once and keep it.
- Character-3 talking portraits live on the same Hedra account if that is also the job.
- Teams and Enterprise add SSO, Slack, account managers, and private deployments. Elyum has no team seats.
- Hedra publishes granular per-model API prices. The studio credit rate for Seedance 2.5 is the gap.
Pick Elyum when
- Previews are free. Credits move only on KEEP. Kill refunds the rest in full.
- 480p at 8 credits/sec ($0.08/s) when a 1080p keep would cost 26 credits/sec.
- Free plan is up to 150 credits once (our algorithm may grant them), no card. Plus starts at $9/mo. Hedra Basic is $15/mo.
- Failed generations are never charged. Paid plans kill freely (Free: one kill a month).
Seedance 2.5 in three styles, rendered on Elyum
Getting the most out of Seedance 2.5
- Split camera and subject into two clauses. Write the move (handheld push-in on the bottle) and the body (she does not walk). Seedance 2.5 will otherwise slide both at once and the take looks drunk.
- For talking shots, put the spoken line in quotes and name the room tone (office HVAC, street wash, quiet kitchen). Audio is native. A silent prompt still invents a bed you did not approve.
- Spend the 30-reference budget on lock items: hero face, pack shot, location plate, wardrobe. Do not burn slots on generic lighting stills. Refs are for identity, not mood boards.
- Match prompt structure to duration. A 5-second clip is one action. A 30-second ad needs an open, a product beat, and a hold. Asking for three locations in five seconds teleports.
- When editing an existing clip, say what must stay. Keep the hands and table, swap the can to the red SKU. A full rewrite prompt will regenerate instead of patch.
- Avoid tiny readable type, logos you did not reference, and same-face continuity without attaching that face. Photoreal skin holds. Invented brand marks do not.
Frequently asked questions
How much does a Seedance 2.5 video cost on Elyum vs Hedra?
Is Seedance 2.5 the same model on both?
What happens to a bad Seedance 2.5 take?
Do I need a subscription to use Seedance 2.5 on Elyum?
Does Hedra watermark Seedance 2.5 downloads?
What clip length and resolution does Seedance 2.5 allow?
- Hedra Pricing (accessed 2026-09-07)
- Hedra All Models catalog (accessed 2026-09-07)
- Hedra Video Generation API (accessed 2026-09-07)
- Hedra Veo model page (accessed 2026-09-07)
- Hedra Nano Banana model page (accessed 2026-09-07)
- Hedra Grok Imagine model page (accessed 2026-09-07)
- Hedra Best AI Video Models blog (accessed 2026-09-07)
- Hedra Reviews - Trustpilot (accessed 2026-09-07)
- Hedra AI Review 2026: Pricing, Character-3, and Is It Still Worth It? (fluxnote.io) (accessed 2026-09-07)
- Hedra AI Review 2026: What Holds It Back (lovart.ai, June 2026) (accessed 2026-09-07)
- Hedra Generation History & Credit Refunds docs (accessed 2026-09-07)
Related comparisons
Create everything. Keep the best.
Seedance 2.5 is a AI video generator you can preview free on Elyum. Keep the takes you love, kill the rest for a full refund.