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Sora 2 Pro vs Veo 3.1

vs

Which one, when — curated verdict, not a benchmark table

Both are 2025 text- and image-to-video models at 24 fps in 16:9 or 9:16 with native audio and .mp4 output, so the real split is clip control and rate shape. Choose sora-2-pro at $0.3 per second for any length across a 4-12 s range from a single reference image; choose veo-3.1-generate-001 for 1080p, fixed 4/6/8 s clips and first/last-frame guidance from up to 2 images, at $0.2 per second silent — sora-2-pro's rate is 1.5x that — or $0.4 with audio, twice the silent price.

Pricing

Sora 2 Pro Veo 3.1 Δ
Per output second (with audio) $0.3 $0.4 0.75×
Per output second (silent) $0.2

Rates from the live catalog at build time; each model page carries the current card.

Where they sit — price per output second across all 7 video-generation models on this billing unit (log scale)

Sora 2 Pro · $0.3 Veo 3.1 · $0.4
$0.1 · Sora 2 $0.75 · Veo 3

Capabilities

Sora 2 Pro Veo 3.1
Native audio yes yes

Specs

Sora 2 Pro Veo 3.1
Input modalities text image text image
Output modalities video video
Released 2025-09 2025-10
Resolution 720p / 1024p (fixed set) 720p / 1080p (fixed set)
Clip length 4-12 s (range) 4 / 6 / 8 s (fixed set)
Frame rate 24 fps 24 fps
Aspect ratios
  • 16:9
  • 9:16
  • 16:9
  • 9:16
Input modes
  • text-to-video
  • image-to-video (single reference image)
  • text-to-video
  • first-frame & first/last-frame image-to-video (up to 2 guide images)
Format .mp4 .mp4

Specs are transcribed from each vendor’s documentation; a row a vendor does not publish is left out rather than inferred. Full sources: Sora 2 Pro · Veo 3.1

One prompt, both models — measured through the gateway

PROMPT A paper boat drifts across a rain puddle at dusk. The camera pushes in slowly as a single drop lands beside it and rings spread outward across the reflection.

Sora 2 Pro

Model returned 1280×720 Length 4s latency 130 s

Veo 3.1

Model returned 1280×720 Length 8s latency 63 s

One prompt, one request per model, no retries and no cherry-picking — the first result each model returned. Neither size nor duration was pinned: each model used its own default, because a request shaped to fit all of them would flatter none. Files here are re-encoded for the web, so judge composition and prompt adherence, not compression.

Switch between them with one line

Both ids are in every tab below — the highlighted pair of lines is the only edit. Same endpoint, same key, same request shape.

import time

import requests

BASE = "https://synthorai.io/v1"
HEADERS = {"Authorization": "Bearer sk-syn-..."}

# 1) create the video generation job (POST /v1/videos)
task = requests.post(
    f"{BASE}/videos",
    headers=HEADERS,
    json={
        "model": "sora-2-pro",
        # "model": "veo-3.1-generate-001",  # uncomment this line, comment the one above
        "prompt": "a watercolor lighthouse at dawn, waves rolling in, camera pulling back",
        "resolution": "720p",
        "duration": 5,
    },
).json()

# 2) poll the job until it reaches a terminal state
while task["status"] in ("queued", "in_progress"):
    time.sleep(5)
    task = requests.get(f"{BASE}/videos/{task['id']}", headers=HEADERS).json()

# 3) completed → signed video URL (valid ~24h — download and store it promptly)
if task["status"] == "completed":
    print(task["data"][0]["url"])
else:
    print(task["error"])

Get an API key →

FAQ

Which is cheaper, Sora 2 Pro or Veo 3.1?

Sora 2 Pro is cheaper on per output second (with audio) ($0.3 vs $0.4, 1.3× apart). Other rows may point the other way — the table above carries the full card, and real cost depends on your mix.

Can I A/B test Sora 2 Pro against Veo 3.1 without two integrations?

Yes. Both are served through the same OpenAI-compatible endpoint with one API key — switching is a one-line model-string change, so you can route a fraction of traffic to each and compare bills directly.

What clip lengths and resolutions do they support?

The spec table above lists each model’s published resolutions and clip lengths, and marks whether a value is a fixed set of options or a continuous range — the two look alike and price differently, since per-second billing multiplies with length.

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