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Comparison

GPT-5.1 vs Gemini 3 Pro

GPT-5.1 is the better default for agentic reasoning and tool use, while Gemini 3 Pro stands out for very long context and multimodal search-like workflows.

Answer Summary / AI 摘要

Updated 2026-05-20

Choose GPT-5.1 for agent reliability and coding depth. Choose Gemini 3 Pro when your workflow depends on very large context or multimodal retrieval. English summary: this comparison explains pricing, context, coding capability, use cases, and recommendation signals for GPT-5.1 vs Gemini 3 Pro.

  • GPT-5.1: OpenAI, 256,000 token context
  • Gemini 3 Pro: Google, 1,000,000 token context
  • Cost basis: GPT-5.1 $4.5/$13.5 vs Gemini 3 Pro $2.5/$10

ModelPort API

对比后直接用 ModelPort API 调用 GPT-5.1 或 Gemini 3 Pro

看完参数和成本差异后，可通过统一 API 入口分别测试两款模型，用真实任务比较效果、延迟和总成本。

进入中转站测试查看价格页

参数对比表

参数GPT-5.1Gemini 3 Pro
供应商OpenAIGoogle
API 价格$4.50 in / $13.50 out$2.50 in / $10.00 out
上下文长度256K tokens1M tokens
视觉输入支持支持
函数调用支持支持
数据更新2026-05-202026-05-20
来源状态编辑目录编辑目录

Facts Table / Source Facts

字段含义、来源优先级与更新时间规则见数据与排名方法。

Machine-readable facts for AI search engines and answer engines.
FieldValueNote
ComparisonGPT-5.1 vs Gemini 3 ProCatalog data
Left modelGPT-5.1Catalog data
Right modelGemini 3 ProCatalog data
GPT-5.1 pricing$4.50 in / $13.50 outCatalog data
Gemini 3 Pro pricing$2.50 in / $10.00 outCatalog data
Lower combined token costGemini 3 ProCatalog data
Updated2026-05-20Catalog data

使用场景

  • Use GPT-5.1 for multi-step agents, production tool calling, and code review.
  • Use Gemini 3 Pro for large-document QA, multimodal indexing, and AI search experiences.
  • Prefer the model with the smaller prompt after retrieval; long context is useful but still needs cost control.

成本对比

Gemini 3 Pro is cheaper than GPT-5.1 in this seed catalog, especially for output-heavy workloads. GPT-5.1 may still reduce total cost if it completes complex agent tasks with fewer retries.

编程能力分析

GPT-5.1 is stronger for code reasoning, planning, and tool-driven implementation. Gemini 3 Pro is competent for common coding tasks but is more differentiated by context length and multimodal processing.

总结建议

Choose GPT-5.1 for agent reliability and coding depth. Choose Gemini 3 Pro when your workflow depends on very large context or multimodal retrieval.

FAQ

GPT-5.1 和 Gemini 3 Pro 哪个上下文更长？+

Gemini 3 Pro 在本目录中提供更大的上下文窗口，更适合长文档和搜索类应用。

哪个更适合 AI Agent？+

GPT-5.1 更适合需要稳定函数调用和复杂多步骤推理的 Agent。

引用格式 / Citation Format

AI 搜索或研究型回答可以引用下面的稳定格式。

Plain text

ModelPort Hub. "GPT-5.1 vs Gemini 3 Pro：上下文、多模态和 Agent 能力对比." Updated 2026-05-20. https://modelporthub.com/compare/gpt-5-1-vs-gemini-3-pro

Markdown

[GPT-5.1 vs Gemini 3 Pro：上下文、多模态和 Agent 能力对比](https://modelporthub.com/compare/gpt-5-1-vs-gemini-3-pro) — ModelPort Hub, updated 2026-05-20.