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Claude Haiku 4 vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Verdict

o3-mini is stronger for coding with a coding ELO of 1340 vs 1195. Claude Haiku 4 is faster at 130 tokens/sec vs 55 tokens/sec. o3-mini ranks higher overall with an Arena ELO of 1310 vs 1220.

Side-by-Side Comparison

FeatureClaude Haiku 4o3-mini
ProviderAnthropicOpenAI
Input Price / 1M tokens$0.800$1.10
Output Price / 1M tokens$4.00$4.40
Context Window200K200K
Max Output Tokens8,192100,000
Arena ELO1,2201,310
Coding ELO1,1951,340
TTFT (ms)1501,500
Tokens/sec13055
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use Claude Haiku 4

Choose Claude Haiku 4 when you need: very fast response times, 200k context window, affordable for anthropic quality, good instruction following. It excels at chatbots, classification, cost-sensitive, high-volume tasks. It is also the more cost-effective option between the two.

Strengths:

  • Very fast response times
  • 200K context window
  • Affordable for Anthropic quality
  • Good instruction following

Best for:

chatbotsclassificationcost-sensitivehigh-volume
When to Use o3-mini

Choose o3-mini when you need: strong mathematical reasoning, good coding performance, affordable reasoning model, large output window. It excels at reasoning, math, coding, science tasks.

Strengths:

  • Strong mathematical reasoning
  • Good coding performance
  • Affordable reasoning model
  • Large output window

Best for:

reasoningmathcodingscience

Frequently Asked Questions

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