tokevenClaudevsGPT
Claude Mythos 5.1 vs GPT 6 Astra
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Mythos 5.1
FlagshipGPT 6 Astra
FlagshipInput $/MTok
$10.00
$10.00
Output $/MTok
$50.00
$50.00
Cache discount
98% off
90% off
Context
1,000K
922K
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 5.1
GPT 6 Astra
Guidance
When to use Claude Mythos 5.1 vs GPT 6 Astra
Choose Claude Mythos 5.1 when...
- -You need a larger context window (1,000K vs 922K)
- Similar performance; consider provider preference or ecosystem fit.
Choose GPT 6 Astra 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 Mythos 5.1
GPT 6 Astra
100K tokens
$2.20
$2.20
1M tokens
$22.00Cheaper
$36.50
10M tokens
$220.00Cheaper
$365.00
FAQ
When should I use Claude Mythos 5.1 instead of GPT 6 Astra?
Claude Mythos 5.1 and GPT 6 Astra perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is GPT 6 Astra cheaper than Claude Mythos 5.1?
Both models have the same input pricing at $10.00/MTok. Compare output pricing: $50.00 vs $50.00/MTok.
What are the context window sizes for Claude Mythos 5.1 and GPT 6 Astra?
Claude Mythos 5.1 has a 1,000K token context window. GPT 6 Astra has a 922K 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 Mythos 5.1 and GPT 6 Astra 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.