tokevenClaude Opus 5.5 vs Gemini Omni 1.1 Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Opus 5.5
FlagshipGemini Omni 1.1 Flash
Fast / BudgetQuality
Task confidence comparison
Guidance
When to use Claude Opus 5.5 vs Gemini Omni 1.1 Flash
Choose Claude Opus 5.5 when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Gemini Omni 1.1 Flash when...
- -Cost matters: 63% cheaper on input tokens
- -You need a larger context window (1,048.576K vs 1,000K)
At scale
Cost at scale
FAQ
When should I use Claude Opus 5.5 instead of Gemini Omni 1.1 Flash?
Claude Opus 5.5 and Gemini Omni 1.1 Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Gemini Omni 1.1 Flash cheaper than Claude Opus 5.5?
Yes. Gemini Omni 1.1 Flash input costs $1.50/MTok vs $4.00/MTok for Claude Opus 5.5, saving 63% on input.
What are the context window sizes for Claude Opus 5.5 and Gemini Omni 1.1 Flash?
Claude Opus 5.5 has a 1,000K token context window. Gemini Omni 1.1 Flash has a 1,048.576K 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 Opus 5.5 and Gemini Omni 1.1 Flash 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.