compare/Gemini 3.1 ProvsSeedance 2.5

Gemini 3.1 Pro vs Seedance 2.5

Pricing, context window, capabilities, and release date — pulled from each provider's public docs. Both are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

RUN BOTH LIVE

Paste a prompt. Watch them race.

Both models stream in parallel through your own AIgateway key. Tokens, latency, and cost update as they arrive.

Sign in to runLive streaming uses your own key. It's free to sign up.
 Gemini 3.1 Pro
google/gemini-3.1-pro
Seedance 2.5
bytedance/seedance-2.5
ProviderGoogleByteDance
FamilyGemini 3
Modalitytextvideo
Context window1,000,000 tok
Max output65,536 tok
Released2026-05-222026-08-07
Input price$2.00 /1M$0.231 /sec
Output price$12.00 /1M
Cache read$0.200 /1M
Toolsyes
Streamingyes
Visionyes
JSON modeyes
Reasoningyes
Prompt cachingyes
Gemini 3.1 Pro
google/gemini-3.1-pro
Full spec →

Google's most intelligent Gemini model with improved reasoning, a medium thinking level, and a 1M token context window.

Strengths
  • 2M-token context
  • Native video + audio input
  • Cheapest long-context reasoning
Seedance 2.5
bytedance/seedance-2.5
Full spec →

ByteDance's next-generation video model with a unified multimodal reference-to-video architecture. Generates video from text, up to 30 reference images, 10 reference videos, and 10 reference audio clips — including audio-only input with no image or video required. Supports first/last-frame image-to-video, video editing, video extension, intelligent duration (including automatic selection), and adaptive aspect ratio.

Strengths
  • Text-to-video generation
SWITCH BETWEEN THEM

One key, both models, one line different.

# pip install aigateway-py openai
# aigateway-py: sub-accounts, evals, replays, jobs, webhook verify.
# openai SDK: chat/embeddings/images/audio — drop-in compat per our SDK's own guidance.
from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

# Try Gemini 3.1 Pro
client.chat.completions.create(
    model="google/gemini-3.1-pro",
    messages=[{"role":"user","content":"hello"}],
)

# Try Seedance 2.5 — same client, same key
client.chat.completions.create(
    model="bytedance/seedance-2.5",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyAdd a third model

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