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Claude Instant 1.2 vs GPT-5.4

0 vs 1 benchmarks won

Anthropic
Claude Instant 1.2
OpenAI
GPT-5.4
Overview
CompanyAnthropicOpenAI
Release dateAug 9 2023Mar 5 2026
Model type
Open sourceNoNo
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
92.8%
Software engineering
SWE-Bench Verified
Multimodal understanding
MMMU
Timeline
Release gapClaude Instant 1.2 shipped 939 days before GPT-5.4

Which is better: Claude Instant 1.2 or GPT-5.4?

GPT-5.4 leads Claude Instant 1.2 on 1 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Instant 1.2 shipped 939 days before GPT-5.4, so benchmark comparisons should account for the intervening progress.

Published specifications for these two models are limited — see each model page for the latest details.

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 Claude Instant 1.2 released?
Claude Instant 1.2 was released by Anthropic on Aug 9 2023.
When was GPT-5.4 released?
GPT-5.4 was released by OpenAI on Mar 5 2026.

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