LLMversus

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

Pricing verified Apr 20, 2026By LLMversusUpdated June 14, 2026View methodology

⚡ Quick Answer

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.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude Haiku 4o3-mini
ProviderAnthropicOpenAI
Input Price / 1M tokens$1.00$1.10
Output Price / 1M tokens$5.00$4.40
Context Window
200K
128K
Max Output Tokens
8,192
65,536
Arena ELO
1,220
1,280
Coding ELO
1,195
1,285
TTFT (ms)
150
350
Tokens/sec
130
25
MultimodalYesNo
JSON ModeYesYes
Function CallingYesNo
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 reasoning
  • Good math skills
  • Affordable reasoning

Best for:

reasoningmathgeneral-purpose

Frequently Asked Questions

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