Compare

GPT-5.5 Pro — and what?

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 1 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

Search1/4
GPT-5.5 Pro
openai/gpt-5.5-pro
Provider
OpenAI
Family
GPT-5
Modality
text
Context window
1,000,000 tok
Max output
16,384 tok
Released
2026-05-22
License
Proprietary
Input price
$30.00 /1M
Output price
$180.00 /1M
Tools
yes
Streaming
yes
Vision
yes
JSON mode
yes
Reasoning
yes
Prompt caching
—
Batch API
—
Try it
Open in playground →
GPT-5.5 Pro
openai/gpt-5.5-pro
Full spec →

GPT-5.5 pro uses OpenAI's Responses API with built-in tools, improved reasoning, and stateful context management.

Strengths
  • General-purpose chat
  • Long context
  • Tool use
Use cases
ChatbotsContent generationAgentic workflows

Compare with another

Gemini 4 Argon vs GPT-5.5 Pro
google/gemini-4-argon · openai/gpt-5.5-pro
Claude Sonnet 5.5 vs GPT-5.5 Pro
anthropic/claude-sonnet-5.5 · openai/gpt-5.5-pro
Claude Opus 5.5 vs GPT-5.5 Pro
anthropic/claude-opus-5.5 · openai/gpt-5.5-pro
GPT-6.1 Sol vs GPT-5.5 Pro
openai/gpt-6.1-sol · openai/gpt-5.5-pro
Grok 4.7 vs GPT-5.5 Pro
xai/grok-4.7 · openai/gpt-5.5-pro
Kimi K3 vs GPT-5.5 Pro
moonshot/kimi-k3 · openai/gpt-5.5-pro
Glm-5.3 vs GPT-5.5 Pro
zai-org/glm-5.3 · openai/gpt-5.5-pro
Qwen3.8-Max vs GPT-5.5 Pro
alibaba/qwen3.8-max · openai/gpt-5.5-pro
GPT-5.6 Sol vs GPT-5.5 Pro
openai/gpt-5.6-sol · openai/gpt-5.5-pro