Claude Sonnet 5.5 vs Gemini 4 Argon.
Claude Sonnet 5.5 is 1.0x cheaper.

For a chatbot doing 100K requests a month with 1,000 input and 500 output tokens each: $700.00 vs $700.00.

Anthropic

Claude Sonnet 5.5

Input / 1M$2.00
Cached / 1M$0.10
Output / 1M$10.00
Context1M
Chatbot at 100K req/mo$700.00

Source · Oct 20, 2026

Google Gemini

Gemini 4 Argon

Input / 1M$2.00
Cached / 1M$0.10
Output / 1M$10.00
Context—
Chatbot at 100K req/mo$700.00

Source · Oct 20, 2026

Price isn't everything: check quality on your own prompts. Claude Sonnet 5.5 wins on list price for this workload, but output-heavy jobs (long answers, agents, reasoning) shift the math toward whichever model has the lower output price. Here both charge the same for output.

Run your own workload