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

Gemma 1 vs GPT-5.5

Google
Gemma 1
OpenAI
GPT-5.5
Overview
CompanyGoogleOpenAI
Release dateFeb 21 2024Apr 23 2026
AccessOpen WeightProprietary
Specifications
Context window
1.05M
Benchmarks
Nonsense detection
BullshitBench v2
47%
Agentic coding
SWE-Bench Pro
58.6%
Multilingual coding
SWE-Bench Multilingual
77.8%
Agentic coding
CursorBench v3.1
64.3%
Agentic coding
DeepSWE 1.0
64.3%
Agentic terminal coding
Terminal-Bench 2.1
78.2%
Agentic terminal coding
Terminal-Bench 2.0
82.7%
Software engineering
Expert-SWE (Internal)
73.1%
Multi-step tool use
MCP Atlas
75.3%
General tool use
Toolathlon
55.6%
Web browsing
BrowseComp
84.4%
Cybersecurity
CyberGym
81.8%
Multidisciplinary reasoning
Humanity's Last Exam · no tools
41.4%
Multidisciplinary reasoning
Humanity's Last Exam · with tools
52.2%
Abstract reasoning
ARC-AGI-2
84.6%
Advanced math
FrontierMath · Tier 1–3
51.7%
Advanced math
FrontierMath · Tier 4
35.4%
Science
GPQA Diamond
93.6%
Agentic computer use
OSWorld-Verified
78.7%
Agentic financial analysis
Finance Agent v2
51.8%
Agentic legal work
Harvey's Legal Agent Benchmark
3.75%
Tax questions
TaxEval v2
74.98%
Medical admin work
MedScribe
86.87%
Knowledge work
GDPval-AA
1769
Knowledge work
GDPval (win/tie rate)
84.9%
Chart reasoning
CharXiv Reasoning
84.1%
Multimodal reasoning
MMMU-Pro
81.2%
Spatial reasoning
Blueprint-Bench 2
36.2%
Long context
MRCR v2 (8-needle) · 128k average
94.8%
Community preference
Arena Elo (Text)
1481
Community preference (code)
Arena Elo (Code)
1502
Timeline
Release gapGemma 1 shipped 792 days before GPT-5.5

Which is better: Gemma 1 or GPT-5.5?

Gemma 1 and GPT-5.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemma 1 shipped 792 days before GPT-5.5, so benchmark comparisons should account for the intervening progress.

Gemma 1 is open weight, while GPT-5.5 is proprietary.

Direct benchmark comparisons are unavailable — Gemma 1 and GPT-5.5 don't publish scores on any of the same benchmarks.

Frequently asked questions

Gemma 1 was released by Google on Feb 21 2024.

GPT-5.5 was released by OpenAI on Apr 23 2026.

Gemma 1 is an open weight model released by Google. GPT-5.5 is a proprietary model released by OpenAI.

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