tokevenClaudevsGPT
Claude Haiku 5.5 vs o3 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Haiku 5.5
Fast / Budgeto3 Pro
FlagshipInput $/MTok
$0.10
$20.00
Output $/MTok
$0.50
$80.00
Cache discount
90% off
0% off
Context
1M
200K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Claude Haiku 5.5
o3 Pro
Guidance
When to use Claude Haiku 5.5 vs o3 Pro
Choose Claude Haiku 5.5 when...
- -Cost matters: 99% cheaper on input tokens
- -You need a larger context window (1M vs 200K)
Choose o3 Pro when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Haiku 5.5
o3 Pro
100K tokens
$0.02Cheaper
$3.80
1M tokens
$1.10Cheaper
$38.00
10M tokens
$11.00Cheaper
$380.00
FAQ
When should I use Claude Haiku 5.5 instead of o3 Pro?
Claude Haiku 5.5 and o3 Pro perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o3 Pro cheaper than Claude Haiku 5.5?
o3 Pro input costs $20.00/MTok, which is 19900% more than Claude Haiku 5.5 at $0.10/MTok.
What are the context window sizes for Claude Haiku 5.5 and o3 Pro?
Claude Haiku 5.5 has a 1M token context window. o3 Pro has a 200K 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 5.5 and o3 Pro 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.