Comprehensive side-by-side LLM comparison
Claude Haiku 4.5 leads with 1.3% higher average benchmark score. Claude Haiku 4.5 offers 72.0K more tokens in context window than Claude Opus 4. Claude Haiku 4.5 is $84.00 cheaper per million tokens. Claude Opus 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
Anthropic
Claude Haiku 4.5 continues Anthropic's tradition of fast, efficient models in the fourth generation Claude family. Designed to maintain the hallmark speed and cost-effectiveness of the Haiku line while incorporating advancements from the Claude 4 series, it serves applications requiring rapid processing and quick turnaround times.
Anthropic
Claude Opus 4 was developed as the flagship model in the Claude 4 generation, designed to push the boundaries of AI capability in complex reasoning, analysis, and multi-step problem-solving. Built to handle the most demanding enterprise tasks, it represents Anthropic's highest tier of intelligence and capability.
4 months newer

Claude Opus 4
Anthropic
2025-05-22

Claude Haiku 4.5
Anthropic
2025-10-15
Cost per million tokens (USD)

Claude Haiku 4.5

Claude Opus 4
Context window and performance specifications
Average performance across 6 common benchmarks

Claude Haiku 4.5

Claude Opus 4
Performance comparison across key benchmark categories

Claude Haiku 4.5

Claude Opus 4
Claude Haiku 4.5
2025-02-01
Available providers and their performance metrics

Claude Haiku 4.5
Anthropic

Claude Opus 4

Claude Haiku 4.5

Claude Opus 4

Claude Haiku 4.5

Claude Opus 4
Anthropic
Bedrock
ZeroEval