Video model comparison
Two tiers of the same Veo 3.1 family: one is cheaper and quicker, one is the flagship. This page uses RelayMe’s live credit prices to show how far apart they are and when to switch.
Veo 3.1 Fast bills 150 credits per second with audio (about US$0.15) against 400 for Veo 3.1, so the same 8-second 1080p clip costs roughly US$1.20 versus US$3.20. Both take 4 / 6 / 8 s clips, output 720p / 1080p or 4K, and can render with or without an audio track. Use Fast for drafts, iterations and volume social content; switch to Veo 3.1 for the hero shot where fidelity matters more than cost.
| Item | Veo 3.1 Fast | Veo 3.1 |
|---|---|---|
| Credits per second (base tier, with audio) | 150 (720p / 1080p) | 400 (720p / 1080p) |
| Credits per second (base tier, no audio) | 100 | 200 |
| Credits per second (4K / 2K, with audio) | 350 (4K) | 600 (4K) |
| Credits per second (4K / 2K, no audio) | 300 | 400 |
| Clip length | 4 / 6 / 8 s | 4 / 6 / 8 s |
| Resolutions | 720p / 1080p / 4K | 720p / 1080p / 4K |
| Aspect ratios | Model default | Model default |
| Audio track | Optional (cheaper without) | Optional (cheaper without) |
| Inputs and references | Text-to-video; image-to-video from a first frame | Text-to-video; image-to-video from a first frame |
| Model family | Google DeepMind | Google DeepMind |
Credit prices come from the same live model list as the pricing page USAGE table; 1,000 credits is about US$1.
Credits for one 8-second clip
| Setting | Veo 3.1 Fast | Veo 3.1 |
|---|---|---|
| Base tier, with audio | 1,200 · ≈US$1.20 | 3,200 · ≈US$3.20 |
| Base tier, no audio | 800 · ≈US$0.80 | 1,600 · ≈US$1.60 |
| 4K / 2K, with audio | 2,800 · ≈US$2.80 | 4,800 · ≈US$4.80 |
A dated example from our own production run (August 2026): a 4-second 720p Veo 3.1 Fast clip with audio, seeded by a 20-credit Nano Banana product image, cost 620 credits for the whole image-to-video chain, about US$0.62. The full breakdown is in the video cost guide.
The tables compare settings and costs, not measured visual quality or speed. In one product-image-to-video run on 2026-08-25, the Nano Banana special channel generated a 1:1 product image for 20 credits in about half a minute. Veo 3.1 Fast then generated a 4-second, 720p, 16:9 clip with audio for 600 credits in about a minute. The total was 620 credits. This is one historical observation, not a current quote or a cross-model performance result.
Read the workflow and test context
For your own comparison, keep inputs and prompts fixed and record the model, channel, settings, date, actual credits and elapsed time. Evaluate cost calculations separately from generated results.
Drop a Text node with your prompt, connect it to a Veo 3.1 Fast node and a Veo 3.1 node side by side, run once, and both clips land in the task history with their exact credit cost. Promote the prompt to Veo 3.1 only when the Fast draft is already right.
One login and one credit balance, with no Google Cloud project of your own, and the same workflow can also call Grok Imagine, MiniMax-H3 and the image models.
No credit card required · 1,000 credits ≈ US$1
They belong to the same Veo 3.1 family from Google DeepMind; Fast is the lower-cost, quicker tier. On RelayMe it is 150 credits per second with audio versus 400 for Veo 3.1, with the same 4 / 6 / 8 s clip lengths and the same 4K option.
3,200 credits (about US$3.20) at 720p / 1080p with audio, 1,600 credits without audio, and 4,800 credits at 4K with audio. The same 8 seconds on Veo 3.1 Fast with audio is 1,200 credits (about US$1.20). 1,000 credits is roughly US$1.
Yes. Both have a no-audio rate: 200 credits/sec for Veo 3.1 and 100 for Veo 3.1 Fast at 720p / 1080p. Turn off audio generation on the node.
No. RelayMe connects to Veo 3.1 and Veo 3.1 Fast through its own integration. You pay in RelayMe credits (1,000 credits is about US$1), start free without a credit card, and can combine Veo with Grok Imagine, MiniMax-H3 and the image models in the same workflow.
Start with Veo 3.1 Fast: in our August 2026 test an image-to-video ad chain at 4 seconds, 720p with audio cost about 620 credits. Once the prompt is final, move the same chain to Veo 3.1 if the client needs the extra fidelity or 4K.