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GPT-5.6 Sol vs Seedream 5 Pro

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

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GPT-5.6 Sol
openai/gpt-5.6-sol
Seedream 5 Pro
bytedance/seedream-5-pro
Provider
OpenAI
ByteDance
Family
GPT-5
Seedream
Modality
text
image
Context window
1,050,000 tok
Max output
128,000 tok
Released
2026-07-10
2026-07-23
License
Proprietary
Proprietary
Input price
$5.00 /1M
Output price
$30.00 /1M
Per image
$0.045 /img
Tools
yes
Streaming
yes
Vision
yes
JSON mode
yes
Reasoning
yes
Prompt caching
Batch API
Try it
Open in playground →
View model →
GPT-5.6 Sol
openai/gpt-5.6-sol
Full spec →

GPT-5.6 Sol is OpenAI's frontier GPT-5.6 model for complex professional work, using the Responses API for reasoning and stateful context management.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows
Seedream 5 Pro
bytedance/seedream-5-pro
Full spec →

Seedream 5 Pro is ByteDance's high-quality image generation and editing model with text prompts, up to 10 reference images, and 1K, 2K, or explicit pixel-size output controls.

Strengths
  • Text-to-image generation
  • Creative control
Use cases
Marketing assetsProduct mockupsConcept art

Compare with another

Claude Opus 5 vs GPT-5.6 Sol
anthropic/claude-opus-5 · openai/gpt-5.6-sol
Claude Opus 5 vs Seedream 5 Pro
anthropic/claude-opus-5 · bytedance/seedream-5-pro
Grok 4.5 vs GPT-5.6 Sol
xai/grok-4.5 · openai/gpt-5.6-sol
Grok 4.5 vs Seedream 5 Pro
xai/grok-4.5 · bytedance/seedream-5-pro
Kimi K3 vs GPT-5.6 Sol
moonshot/kimi-k3 · openai/gpt-5.6-sol
Kimi K3 vs Seedream 5 Pro
moonshot/kimi-k3 · bytedance/seedream-5-pro
Gemini 3.6 Flash vs GPT-5.6 Sol
google/gemini-3.6-flash · openai/gpt-5.6-sol
Gemini 3.6 Flash vs Seedream 5 Pro
google/gemini-3.6-flash · bytedance/seedream-5-pro
GPT-5.6 Sol vs Claude Fable 5
openai/gpt-5.6-sol · anthropic/claude-fable-5
SWITCH BETWEEN THEM

One key, all 2, one line different.

from openai import OpenAI

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

# GPT-5.6 Sol
client.chat.completions.create(
    model="openai/gpt-5.6-sol",
    messages=[{"role":"user","content":"hello"}],
)

# Seedream 5 Pro
client.chat.completions.create(
    model="bytedance/seedream-5-pro",
    messages=[{"role":"user","content":"hello"}],
)
Get an AIgateway keyRun an eval on these →