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Claude Haiku 4.5 vs DeepSeek-V3.2

2 vs 0 benchmarks won

Anthropic
Claude Haiku 4.5
DeepSeek
DeepSeek-V3.2
Overview
CompanyAnthropicDeepSeek
Release dateOct 15 2025Dec 1 2025
Model type
Open sourceNoYes
Specifications
Parameters
Context window
Benchmarks
Science reasoning
GPQA Diamond
73%
Software engineering
SWE-Bench Verified
73.3%
Multimodal understanding
MMMU
Timeline
Release gapClaude Haiku 4.5 shipped 47 days before DeepSeek-V3.2

Which is better: Claude Haiku 4.5 or DeepSeek-V3.2?

Claude Haiku 4.5 leads DeepSeek-V3.2 on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude Haiku 4.5 shipped 47 days before DeepSeek-V3.2, so benchmark comparisons should account for the intervening progress.

DeepSeek-V3.2 is an open-source / open-weight model; Claude Haiku 4.5 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 Claude Haiku 4.5 released?
Claude Haiku 4.5 was released by Anthropic on Oct 15 2025.
When was DeepSeek-V3.2 released?
DeepSeek-V3.2 was released by DeepSeek on Dec 1 2025.
Is Claude Haiku 4.5 or DeepSeek-V3.2 open source?
DeepSeek-V3.2 is an open-source / open-weight model released by DeepSeek. Claude Haiku 4.5 is a proprietary model released by Anthropic.

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