AI Model Release Tracker - Timeline of Major AI Models from 2022-2026

Home/Compare/DeepSeek V3.1 vs Gemini 2.5 Pro

DeepSeek V3.1 vs Gemini 2.5 Pro

0 vs 3 benchmarks won

DeepSeek
DeepSeek V3.1
Google
Gemini 2.5 Pro
Overview
CompanyDeepSeekGoogle
Release dateAug 21 2025Mar 25 2025
Model type
Open sourceYesNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
86.4%
Software engineering
SWE-Bench Verified
59.6%
Multimodal understanding
MMMU
68%
Timeline
Release gapGemini 2.5 Pro shipped 149 days before DeepSeek V3.1

Which is better: DeepSeek V3.1 or Gemini 2.5 Pro?

Gemini 2.5 Pro leads DeepSeek V3.1 on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Gemini 2.5 Pro shipped 149 days before DeepSeek V3.1, so benchmark comparisons should account for the intervening progress.

DeepSeek V3.1 is an open-source / open-weight model; Gemini 2.5 Pro is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was DeepSeek V3.1 released?
DeepSeek V3.1 was released by DeepSeek on Aug 21 2025.
When was Gemini 2.5 Pro released?
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Is DeepSeek V3.1 or Gemini 2.5 Pro open source?
DeepSeek V3.1 is an open-source / open-weight model released by DeepSeek. Gemini 2.5 Pro is a proprietary model released by Google.

Other comparisons