HappyHorse 1.0 at $0.15 a second: four Sume rows cost less at 720p

Runway Dev lists HappyHorse 1.0 at 15 credits per second at 720p and 30 credits at 1080p, which is $0.15 and $0.30 per second at $0.01 a credit. Sume does not list HappyHorse. Four Sume rows cost less per second at 720p or 768p (MiniMax H3, MiniMax H3 Max, Gemini Omni Flash 1.1, Wan 3.0), and three cost less at 1080p (MiniMax H3 Max, Gemini Omni Flash 1.1, Wan 3.0).

That says nothing about quality, which is not something a price page can show. It only tells you what you would pay to swap the model out of a pipeline.

Per-second comparison

Sume figures are list price times 1.25 at default options, from the shared price sheet; the Runway figures come from its pricing page, read 2026-10-09.

The two rows that cost more

Seedance 2.0 and 2.5 are the exceptions. At 720p Seedance 2.0 is $0.378 per second, 2.52 times HappyHorse's $0.15, and Seedance 2.5 is $0.5778, 3.85 times. For a 10-second clip that is $3.78 and $5.78 against $1.50. Those rows buy things the cheaper ones may not: Seedance 2.5 accepts 4 to 30 seconds and Seedance 2.0 lists image, video and audio input references.

How to test a swap

Pick five prompts you already run on HappyHorse, run each on wan-3.0 and minimax-h3-max, and compare. At 10 seconds and 720p the five-prompt trial costs 5 x $1.25 = $6.25 on Wan and 5 x $1.00 = $5.00 on H3 Max at 768p. That is cheaper than a single month of guessing.

Savings per hundred clips

The following figures use the same list prices as the tables above.

• Replacing HappyHorse with Wan 3.0 at 720p saves 100 x 10 x ($0.15 - $0.125) = $25 per hundred 10-second clips.
• Replacing it with MiniMax H3 at 768p saves 100 x 10 x ($0.15 - $0.075) = $75.
• At 1080p, Omni at $0.1875 saves 100 x 10 x ($0.30 - $0.1875) = $112.50.
• Runway's table also lists HappyHorse only at 720p and 1080p, so there is no lower rung to compare with Sume's 480p rows.

Limits of this comparison

The list also shows what to ask before swapping a model: does the clip need 1080p at under $0.30 per second, does it need audio, does it need more than 10 seconds? Omni stops at 10 seconds, H3 and H3 Max at 15, and Wan 3.0 reaches 30. Runway's page lists HappyHorse per second without stating a duration limit in the table, so check its model docs before comparing lengths.