How do GPT-3.5 and GPT-5.3 compare in AI?

GPT-3.5 and GPT-5.3 are competitors in the AI industry with 3 shared article mentions.

What is the difference between GPT-3.5 and GPT-5.3?

GPT-3.5 has 24 news mentions while GPT-5.3 has 40. They are connected through 2 relationship types in the AI industry knowledge graph.

Which is better, GPT-3.5 or GPT-5.3?

Based on 3 analyzed articles, GPT-5.3 has more industry coverage (40 mentions vs 24). Both are significant players in the AI space. See the detailed analysis below.

What are the key differences between GPT-3.5 and GPT-5.3 in 2026?

In 2026, GPT-3.5 and GPT-5.3 compete across 2 dimensions. Both are shaping the AI landscape with distinct approaches.

GPT-3.5 vs GPT-5.3 — AI Comparison 2026

GPT-3.5

→ stableNeutral

competes with (2)

GPT-5.3

· quietNeutral

Coverage (30d)

4vs0

This Week

0vs0

Evidence

3 articles

Relationships

Timeline

GPT-3.52026-05-02

GPT-5.5 fully solved TLO enterprise network simulation in 2 of 10 attempts

GPT-3.52026-05-02

GPT-5.5 scored 71.4% on AISI expert CTF tasks, matching Claude Mythos Preview

GPT-3.52026-04-24

Early user review of GPT-5.5 in Codex highlights major improvements

GPT-3.52026-04-23

GPT-5.5 model family achieves leading position on Artificial Analysis Index for cost-performance

GPT-3.52026-04-23

OpenAI engineer reveals GPT-5.5 is a Blackwell-native model trained on Nvidia GB200/GB300 NVL72 systems.

GPT-3.52026-04-23

GPT-5.5 spotted via Codex API backdoor, suggesting unofficial release channel for image generation.

GPT-5.32026-04-18

Achieved 78.5% score on SWE-Bench coding benchmark

GPT-5.32026-04-16

Observed autonomously optimizing an embedding model for Qualcomm NPU for three hours.

GPT-5.32026-03-26

Achieved 100% resident identification accuracy in a safety evaluation for a care home smart speaker system.

GPT-5.32026-03-07

Released as OpenAI's most capable frontier model with unified coding, reasoning, and computer operation capabilities

Ecosystem

GPT-3.5

competes withGemini 3 Pro2 src

competes withGPT-5.31 src

competes withClaude Mythos1 src

competes withGemini Flash1 src

competes withComposer 21 src

competes withClaude 3.5 Opus1 src

GPT-5.3

developed byOpenAI3 src

competes withClaude Mythos Preview1 src

usesComputer Use1 src

competes withClaude Opus 4.71 src

competes withGPT-Rosalind1 src

competes withGPT-3.51 src

Benchmarks

gpqa

GPT-3.5—

GPT-5.392

swe bench pro

GPT-3.5—

GPT-5.356.8

Evidence (3 articles)

GPT-5.5 Ties Claude Mythos in Enterprise Cyber Attack Tests, AISI Finds

May 1, 2026

GPT-5.5 Tops Benchmarks, Costs 2x API Price, Still Hallucinates

Apr 25, 2026

GPT-5.5 Launches: The Super App Strategy, Not the Model

Apr 28, 2026