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Claude 3 Haiku vs GPT-5 Mini

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude 3 Haiku and GPT-5 Mini.

Anthropic

Claude 3 Haiku

Claude 3 Haiku is Anthropic's fastest and most compact model for near-instant responsiveness. Quick and accurate targeted performance. See the launch announcement and benchmark results [here](https://www.anthropic.com/news/claude-3-haiku) #multimodal

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OpenAI

GPT-5 Mini

GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost....

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Technical Specifications

SpecificationClaude 3 HaikuGPT-5 Mini
ProviderAnthropicOpenAI
Context Window200,000 tokens400,000 tokens
Agent SuitabilityN/A85/100
Time to First Token (TTFT)N/A180 ms
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2024-03-132025-08-07

API Pricing Comparison

Input Price per Million Tokens

Claude 3 Haiku

$0.25

GPT-5 Mini

$0.25

Output Price per Million Tokens

Claude 3 Haiku

$1.25

GPT-5 Mini

$2.00

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
7520.0%vs8650.0%
Claude 3 Haiku
GPT-5 Mini
HumanEvalPython coding & logic synthesis
7590.0%vs8800.0%
Claude 3 Haiku
GPT-5 Mini
MATHComplex mathematical problem solving
3890.0%vs8250.0%
Claude 3 Haiku
GPT-5 Mini
GPQAGraduate-level expert reasoning
3200.0%vs6800.0%
Claude 3 Haiku
GPT-5 Mini
HellaSwagCommonsense reasoning and inference
8810.0%vs9550.0%
Claude 3 Haiku
GPT-5 Mini
MT-BenchMulti-turn conversation flow quality
800.0%vs900.0%
Claude 3 Haiku
GPT-5 Mini

Claude 3 Haiku Quirks & Gotchas

No developer gotchas reported.

GPT-5 Mini Quirks & Gotchas

  • โ–ธExcellent for high-frequency classification and routing tasks
  • โ–ธTool calling reliability drops on complex multi-step chains โ€” use GPT-5 for agentic workflows