GPT-5.5 Pro vs Gemini 3.1 Pro Preview

GPT-5.5 Pro와 Gemini 3.1 Pro Preview를 나란히 두고 가격, 모델 ID, 컨텍스트와 출력 한도, 모달리티, 도구 호출, 출시 정보, 사용 가능한 벤치마크 결과를 확인합니다.

GPT-5.5 ProOpenAI
Gemini 3.1 Pro PreviewGoogle

기본 정보

Name

GPT-5.5 ProGPT-5.5 Pro

Model id

GPT-5.5 Progpt-5.5-pro

Intro

GPT-5.5 ProGPT-5.5 Pro은(는) 출처에서 higher-compute GPT-5.5 tier, precision-first 추론을(를) 핵심 특징으로 제시합니다. 주요 가치는 difficult 전문 업무, 코딩, 연구, 데이터 분석 and 문서 중심 tasks에 있습니다. 따라서 일반 챗봇처럼 설명하기보다 이 모델만의 차별점을 중심으로 소개하는 것이 적합합니다.

Author

GPT-5.5 ProOpenAI

Released date

GPT-5.5 Pro2026-04-23

Name

Gemini 3.1 Pro PreviewGemini 3.1 Pro Preview

Model id

Gemini 3.1 Pro Previewgemini-3.1-pro-preview

Intro

Gemini 3.1 Pro PreviewGemini 3.1 Pro Preview은(는) 출처에서 reliability-focused Gemini 3 Pro refinement, better thinking/token efficiency/grounding을(를) 핵심 특징으로 제시합니다. 주요 가치는 소프트웨어 엔지니어링, factual work, agentic 도구 사용 and 프리뷰 테스트에 있습니다. 따라서 일반 챗봇처럼 설명하기보다 이 모델만의 차별점을 중심으로 소개하는 것이 적합합니다.

Author

Gemini 3.1 Pro PreviewGoogle

Released date

Gemini 3.1 Pro Preview2026-02-19

가격

Input

GPT-5.5 Pro$30/M

Output

GPT-5.5 Pro$180/M

Cached input

GPT-5.5 Pron/a

Input

Gemini 3.1 Pro Preview$2/M

Output

Gemini 3.1 Pro Preview$12/M

Cached input

Gemini 3.1 Pro Preview$0.2/M

컨텍스트 및 출력

Context length

GPT-5.5 Pro1.1M

Max output tokens

GPT-5.5 Pro128K

Context length

Gemini 3.1 Pro Preview1M

Max output tokens

Gemini 3.1 Pro Preview65.5K

기능

Reasoning

GPT-5.5 Pro

Knowledge

GPT-5.5 Pro2025-12-01

Attachment

GPT-5.5 Pro

Input modalities

GPT-5.5 ProImage, PDF, Text

Output modalities

GPT-5.5 ProText

Temperature

GPT-5.5 Pro

Tool use

GPT-5.5 Pro

Reasoning

Gemini 3.1 Pro Preview

Knowledge

Gemini 3.1 Pro Preview2025-01-01

Attachment

Gemini 3.1 Pro Preview

Input modalities

Gemini 3.1 Pro PreviewAudio, Image, PDF, Text, Video

Output modalities

Gemini 3.1 Pro PreviewText

Temperature

Gemini 3.1 Pro Preview

Tool use

Gemini 3.1 Pro Preview

벤치마크

Intelligence

n/a

GPT-5.5 Pro

wins

46.5

Gemini 3.1 Pro Preview

Coding

n/a

GPT-5.5 Pro

wins

55.5

Gemini 3.1 Pro Preview

GPT-5.5 ProOpenAI
Gemini 3.1 Pro PreviewGoogle

Knowledge & Reasoning

GPQA

n/a

HLE

n/a

GPQA

wins94.1%

HLE

wins44.7%

Coding

SciCode

n/a

Terminal-Bench Hard

n/a

SciCode

wins58.9%

Terminal-Bench Hard

wins53.8%

Instruction Following & Agent Tasks

IFBench

n/a

AA-LCR

n/a

Tau2

n/a

IFBench

wins77.1%

AA-LCR

wins72.7%

Tau2

wins95.6%

FAQ

Which model is better, GPT-5.5 Pro or Gemini 3.1 Pro Preview?+

GPT-5.5 Pro and Gemini 3.1 Pro Preview should be compared by workload. This page places price, context, output limits, capabilities, and benchmark data side by side. It is also relevant to: gemini vs chatgpt, chatgpt vs gemini.

Is Gemini 3.1 Pro Preview cheaper than GPT-5.5 Pro?+

Use the pricing rows above to compare input, output, and cached input prices for GPT-5.5 Pro and Gemini 3.1 Pro Preview.

Which model supports a longer context length?+

GPT-5.5 Pro lists 1.1M context length, while Gemini 3.1 Pro Preview lists 1M.

Can I access both models through TokenHub?+

If both models are available in the TokenHub catalog, you can route requests to GPT-5.5 Pro and Gemini 3.1 Pro Preview through the TokenHub API.