tokevenClaudevsGPT
Claude Haiku 4.5 vs GPT 5 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Haiku 4.5
Fast / BudgetGPT 5 Pro
FlagshipInput $/MTok
$1.00
$15.00
Output $/MTok
$5.00
$120.00
Cache discount
90% off
0% off
Context
200K
400K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
72
vs
0
Code Review
70
vs
0
Summarization
82
vs
0
Q&A
86
vs
0
Extraction
88
vs
0
Reasoning
65
vs
0
Classification
90
vs
0
Creative Writing
60
vs
0
Claude Haiku 4.5
GPT 5 Pro
Guidance
When to use Claude Haiku 4.5 vs GPT 5 Pro
Choose Claude Haiku 4.5 when...
- -Cost matters: 93% cheaper on input tokens
Choose GPT 5 Pro when...
- -You need a larger context window (400K vs 200K)
- 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 4.5
GPT 5 Pro
100K tokens
$0.22Cheaper
$4.65
1M tokens
$2.20Cheaper
$46.50
10M tokens
$22.00Cheaper
$465.00
FAQ
When should I use Claude Haiku 4.5 instead of GPT 5 Pro?
Claude Haiku 4.5 and GPT 5 Pro perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 5 Pro cheaper than Claude Haiku 4.5?
GPT 5 Pro input costs $15.00/MTok, which is 1400% more than Claude Haiku 4.5 at $1.00/MTok.
What are the context window sizes for Claude Haiku 4.5 and GPT 5 Pro?
Claude Haiku 4.5 has a 200K token context window. GPT 5 Pro has a 400K 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 GPT 5 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.