ClaudevsGPT

Claude Opus 4.5 vs GPT 3.5 Turbo (0125)

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

Pricing

Side-by-side pricing

Claude Opus 4.5

Flagship

GPT 3.5 Turbo (0125)

Fast / Budget
Input $/MTok
$5.00
$0.50
Output $/MTok
$25.00
$1.50
Cache discount
90% off
0% off
Context
200K
16.385K

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 Opus 4.5
GPT 3.5 Turbo (0125)

Guidance

When to use Claude Opus 4.5 vs GPT 3.5 Turbo (0125)

Choose Claude Opus 4.5 when...

  • -You need a larger context window (200K vs 16.385K)
  • Similar performance; consider provider preference or ecosystem fit.

Choose GPT 3.5 Turbo (0125) when...

  • -Cost matters: 90% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Opus 4.5
GPT 3.5 Turbo (0125)
100K tokens
$1.10
$0.08Cheaper
1M tokens
$11.00
$0.80Cheaper
10M tokens
$110.00
$8.00Cheaper

FAQ

When should I use Claude Opus 4.5 instead of GPT 3.5 Turbo (0125)?

Claude Opus 4.5 and GPT 3.5 Turbo (0125) perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is GPT 3.5 Turbo (0125) cheaper than Claude Opus 4.5?

Yes. GPT 3.5 Turbo (0125) input costs $0.50/MTok vs $5.00/MTok for Claude Opus 4.5, saving 90% on input.

What are the context window sizes for Claude Opus 4.5 and GPT 3.5 Turbo (0125)?

Claude Opus 4.5 has a 200K token context window. GPT 3.5 Turbo (0125) has a 16.385K token context window.

Track your real costs

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