When was Claude 3 Haiku released?

Claude 3 Haiku was released by Anthropic on Mar 4 2024.

When was Kimi K2.5 released?

Kimi K2.5 was released by Moonshot AI on Jan 27 2026.

Which is better on GPQA Diamond, Claude 3 Haiku or Kimi K2.5?

Kimi K2.5 scores higher on GPQA Diamond — Claude 3 Haiku 33.3% vs Kimi K2.5 87.6%.

Is Claude 3 Haiku or Kimi K2.5 open source?

Kimi K2.5 is an open-source / open-weight model released by Moonshot AI. Claude 3 Haiku is a proprietary model released by Anthropic.

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Home/Compare/Claude 3 Haiku vs Kimi K2.5

Claude 3 Haiku vs Kimi K2.5

0 vs 2 benchmarks won

	Anthropic Claude 3 Haiku	Moonshot AI Kimi K2.5
Overview
Company	Anthropic	Moonshot AI
Release date	Mar 4 2024	Jan 27 2026
Model type	—	—
Open source	No	Yes
Specifications
Parameters	—	1T
Context window	—	256k
Benchmarks
Science reasoning GPQA Diamond	33.3%	87.6%
Software engineering SWE-Bench Verified	—	76.8%
Multimodal understanding MMMU	—	—
Timeline
Release gap	Claude 3 Haiku shipped 694 days before Kimi K2.5

Which is better: Claude 3 Haiku or Kimi K2.5?

Kimi K2.5 leads Claude 3 Haiku on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Claude 3 Haiku shipped 694 days before Kimi K2.5, so benchmark comparisons should account for the intervening progress.

Kimi K2.5 is an open-source / open-weight model; Claude 3 Haiku is proprietary.

On GPQA Diamond, Kimi K2.5 scores 87.6%, 54.3 points above Claude 3 Haiku at 33.3%.

Frequently asked questions

When was Claude 3 Haiku released?: Claude 3 Haiku was released by Anthropic on Mar 4 2024.
When was Kimi K2.5 released?: Kimi K2.5 was released by Moonshot AI on Jan 27 2026.
Which is better on GPQA Diamond, Claude 3 Haiku or Kimi K2.5?: Kimi K2.5 scores higher on GPQA Diamond — Claude 3 Haiku 33.3% vs Kimi K2.5 87.6%.
Is Claude 3 Haiku or Kimi K2.5 open source?: Kimi K2.5 is an open-source / open-weight model released by Moonshot AI. Claude 3 Haiku is a proprietary model released by Anthropic.