Key features

Physical realism & continuity: improved simulation of object permanence, motion and physics for fewer visual artifacts.
Synchronized audio: generates dialogue and sound effects that line up with on-screen action.
Steerability & style range: finer control over camera framing, stylistic choices, and prompt conditioning for different aesthetics.
Creative controls: More consistent multi-shot sequences, improved physics and motion realism, and controls for style and timing compared with Sora 1.

Technical details

OpenAI describes Sora family models as leveraging latent video diffusion processes with transformer-based denoisers and multimodal conditioning to produce temporally coherent frames and aligned audio. Sora 2 focuses on improving motion physicality (obeying momentum, buoyancy), longer consistent shots, and explicit synchronization between generated visuals and generated speech/sound effects. The public materials emphasize model-level safety and content-moderation hooks (hard blocks for certain disallowed content, enhanced thresholds for minors, and consent flows for likeness).

Limitations & safety considerations

Imperfections remain: Sora 2 makes mistakes (temporal artifacts, imperfect physics in edge cases, voice/oral articulation errors) —Sora 2’s improved but not perfect. OpenAI explicitly notes the model still has failure modes.
Misuse risks: Non-consensual likeness generation, deepfakes, copyright concerns, and teen wellbeing/engagement risks. OpenAI is rolling out consent workflows, stricter cameo permissions, moderation thresholds for minors, and human moderation teams.
Content & legal limits: The app and model block explicit/violent content and limit public-figure likeness generation without consent; OpenAI has also been reported to use opt-out mechanisms for copyrighted sources. Practitioners should evaluate IP and privacy/legal risk before production use.
current deployments emphasize short clips (app features reference ~10-second creative clips), and heavy or unrestricted photorealistic uploads are curtailed during

Primary and practical use cases

Social creation & viral clips: rapid generation and remixing of short vertical clips for social feeds (Sora app use case).
Prototyping & previsualization: quick scene mockups, storyboarding, concept visuals with synchronized temp audio for creative teams.
Advertising & short-form content: proof-of-concept creative testing and small campaign assets where ethical/legal permissions are secured.
Research & toolchain augmentation: tool for media labs to study world-modeling and multi-modal alignment (subject to license and safety guardrails).

常见问题

Does Sora 2 generate video with synchronized sound effects?

How does Sora 2 handle physical motion and object permanence?

What are the typical clip lengths for Sora 2 generation?

When should I use Sora 2 instead of Sora 2 Pro?

Can Sora 2 be used for commercial advertising content?

Sora 2 的示例代码与 API

Sora 2 is OpenAI’s flagship text-to-video and audio generation system designed to produce short cinematic clips with synchronized dialogue, sound effects, persistent scene state, and markedly improved physical realism. Sora 2 represents OpenAI’s step forward in producing short, controllable videos with synchronized audio (speech and sound effects), improved physical plausibility (motion, momentum, buoyancy), and stronger safety controls compared with earlier text-to-video systems.

Curl
Python
JavaScript

# Create a video with sora-2
# Step 1: Submit the video generation request
echo "Submitting video generation request..."
response=$(curl -s https://api.cometapi.com/v1/videos \
  -H "Authorization: Bearer $COMETAPI_KEY" \
  -F "model=sora-2" \
  -F "prompt=A calico cat playing a piano on stage")

echo "Response: $response"

# Extract video_id from response (handle JSON with spaces like "id": "xxx")
video_id=$(echo "$response" | tr -d '
' | sed 's/.*"id"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/')
echo "Video ID: $video_id"

# Step 2: Poll for progress until 100%
echo ""
echo "Checking video generation progress..."
while true; do
  status_response=$(curl -s "https://api.cometapi.com/v1/videos/$video_id" \
    -H "Authorization: Bearer $COMETAPI_KEY")

  # Parse progress from "progress": "0%" format
  progress=$(echo "$status_response" | grep -o '"progress":"[^"]*"' | head -1 | sed 's/"progress":"//;s/"$//')
  # Parse status from the outer level
  status=$(echo "$status_response" | grep -o '"status":"[^"]*"' | head -1 | sed 's/"status":"//;s/"$//')

  echo "Progress: $progress, Status: $status"

  if [ "$progress" = "100%" ]; then
    echo "Video generation completed!"
    break
  fi

  if [ "$status" = "FAILURE" ] || [ "$status" = "failed" ]; then
    echo "Video generation failed!"
    echo "$status_response"
    exit 1
  fi

  sleep 10
done

# Step 3: Download the video to output directory
echo ""
echo "Downloading video to ./output/$video_id.mp4..."
mkdir -p ./output
curl -s "https://api.cometapi.com/v1/videos/$video_id/content" \
  -H "Authorization: Bearer $COMETAPI_KEY" \
  -o "./output/$video_id.mp4"

if [ -f "./output/$video_id.mp4" ]; then
  echo "Video saved to ./output/$video_id.mp4"
  ls -la "./output/$video_id.mp4"
else
  echo "Failed to download video"
  exit 1
fi

Model Name	Tags	Orientation	Resolution	Price
sora-2	videos	Portrait	720x1280	$0.08 / sec
sora-2	videos	Landscape	1280x720	$0.08 / sec
sora-2-all	-	Universal / All	-	$0.08000

Sora 2