ClaudevsGPT

Claude Mythos 5 vs GPT 5.2

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

Pricing

Side-by-side pricing

Claude Mythos 5

Flagship

GPT 5.2

Mid-tier
Input $/MTok
$10.00
$1.75
Output $/MTok
$50.00
$14.00
Cache discount
90% off
90% off
Context
1,000K
272K

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 Mythos 5
GPT 5.2

Guidance

When to use Claude Mythos 5 vs GPT 5.2

Choose Claude Mythos 5 when...

  • -You need a larger context window (1,000K vs 272K)
  • Similar performance; consider provider preference or ecosystem fit.

Choose GPT 5.2 when...

  • -Cost matters: 83% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Mythos 5
GPT 5.2
100K tokens
$2.20
$0.54Cheaper
1M tokens
$22.00
$5.42Cheaper
10M tokens
$220.00
$54.25Cheaper

FAQ

When should I use Claude Mythos 5 instead of GPT 5.2?

Claude Mythos 5 and GPT 5.2 perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is GPT 5.2 cheaper than Claude Mythos 5?

Yes. GPT 5.2 input costs $1.75/MTok vs $10.00/MTok for Claude Mythos 5, saving 83% on input.

What are the context window sizes for Claude Mythos 5 and GPT 5.2?

Claude Mythos 5 has a 1,000K token context window. GPT 5.2 has a 272K token context window.

Track your real costs

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