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Claude Haiku 4.5 vs Claude Opus 5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Haiku 4.5
Fast / BudgetClaude Opus 5
FlagshipInput $/MTok
$1.00
$5.00
Output $/MTok
$5.00
$25.00
Cache discount
90% off
90% off
Context
200K
1M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
72
vs
72
Code Review
70
vs
0
Summarization
82
vs
65
Q&A
86
vs
0
Extraction
88
vs
73
Reasoning
65
vs
91
Classification
90
vs
0
Creative Writing
60
vs
61
Claude Haiku 4.5
Claude Opus 5
Guidance
When to use Claude Haiku 4.5 vs Claude Opus 5
Choose Claude Haiku 4.5 when...
- -You need strong extraction (confidence 88 vs 73)
- -You need strong summarization (confidence 82 vs 65)
- -Cost matters: 80% cheaper on input tokens
Choose Claude Opus 5 when...
- -You need strong reasoning (confidence 91 vs 65)
- -You need strong creative writing (confidence 61 vs 60)
- -You need a larger context window (1M vs 200K)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Haiku 4.5
Claude Opus 5
100K tokens
$0.22Cheaper
$1.10
1M tokens
$2.20Cheaper
$11.00
10M tokens
$22.00Cheaper
$110.00
FAQ
When should I use Claude Haiku 4.5 instead of Claude Opus 5?
Claude Haiku 4.5 outperforms Claude Opus 5 for Extraction, Summarization. It costs $1.00/$5.00 per million tokens (input/output).
Is Claude Opus 5 cheaper than Claude Haiku 4.5?
Claude Opus 5 input costs $5.00/MTok, which is 400% more than Claude Haiku 4.5 at $1.00/MTok.
What are the context window sizes for Claude Haiku 4.5 and Claude Opus 5?
Claude Haiku 4.5 has a 200K token context window. Claude Opus 5 has a 1M token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Haiku 4.5 and Claude Opus 5 stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.