ClaudevsGPT

Claude Haiku 4.5 vs GPT 5.5

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Claude Haiku 4.5

Fast / Budget

GPT 5.5

Flagship
Input $/MTok
$1.00
$5.00
Output $/MTok
$5.00
$30.00
Cache discount
90% off
90% off
Context
200K
128K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
72
vs
91
Code Review
70
vs
90
Summarization
82
vs
89
Q&A
86
vs
90
Extraction
88
vs
87
Reasoning
65
vs
95
Classification
90
vs
85
Creative Writing
60
vs
91
Claude Haiku 4.5
GPT 5.5

Guidance

When to use Claude Haiku 4.5 vs GPT 5.5

Choose Claude Haiku 4.5 when...

  • -You need strong classification (confidence 90 vs 85)
  • -You need strong extraction (confidence 88 vs 87)
  • -Cost matters: 80% cheaper on input tokens
  • -You need a larger context window (200K vs 128K)

Choose GPT 5.5 when...

  • -You need strong reasoning (confidence 95 vs 65)
  • -You need strong code generation (confidence 91 vs 72)
  • -You need strong creative writing (confidence 91 vs 60)
  • -You need strong code review (confidence 90 vs 70)

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Haiku 4.5
GPT 5.5
100K tokens
$0.22Cheaper
$1.25
1M tokens
$2.20Cheaper
$12.50
10M tokens
$22.00Cheaper
$125.00

FAQ

When should I use Claude Haiku 4.5 instead of GPT 5.5?

Claude Haiku 4.5 outperforms GPT 5.5 for Classification, Extraction. It costs $1.00/$5.00 per million tokens (input/output).

Is GPT 5.5 cheaper than Claude Haiku 4.5?

GPT 5.5 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 GPT 5.5?

Claude Haiku 4.5 has a 200K token context window. GPT 5.5 has a 128K token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.