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Model comparison Synced Apr 6, 2026

Anthropic: Claude 3.5 Haiku vs OpenAI: o3 Mini

Side-by-side comparison of Anthropic: Claude 3.5 Haiku and OpenAI: o3 Mini. Compare pricing, context window, capabilities, and find out which is better for your workflow.

Verdict

moderate confidence

Anthropic: Claude 3.5 Haiku and OpenAI: o3 Mini are closely matched across pricing, context, and capabilities. Your choice depends on workflow-specific factors like provider ecosystem preference and existing integrations.

Best for with Anthropic: Claude 3.5 Haiku

No clear advantages identified

Best for with OpenAI: o3 Mini

Long-form content generation

Side-by-side

Technical specifications

Anthropic: Claude 3.5 Haiku OpenAI: o3 Mini
Provider Anthropic OpenAI
Input price $0.80/M $1/M
Output price $4/M $4/M
Context window 200K 200K
Max output 8K 100K
Capabilities
Tool useVision
Tool useReasoning
Released Nov 3, 2024 Jan 31, 2025

Scoring breakdown

How each dimension compares

Price

Anthropic: Claude 3.5 Haiku leads

Anthropic: Claude 3.5 Haiku

$4/M tokens

OpenAI: o3 Mini

$4/M tokens

Context Window

Anthropic: Claude 3.5 Haiku

200K tokens

OpenAI: o3 Mini

200K tokens

Capabilities

Anthropic: Claude 3.5 Haiku

2/4

OpenAI: o3 Mini

2/4

Max Output

OpenAI: o3 Mini leads

Anthropic: Claude 3.5 Haiku

8K tokens

OpenAI: o3 Mini

100K tokens

Recency

Anthropic: Claude 3.5 Haiku

Nov 2024

OpenAI: o3 Mini

Jan 2025

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