Price comparison · checked October 12, 2026

Claude Opus 5.5 vs Gemini 3.1 Pro pricing

For a typical support chatbot (60,000 conversations a month), Gemini 3.1 Pro costs $396 a month and Claude Opus 5.5 costs $720. That makes Gemini 3.1 Pro 1.8× cheaper for this workload.

Claude Opus 5.5Gemini 3.1 Pro
ProviderAnthropicGoogle
Input / 1M$4.00$2.00
Cached input / 1M$0.20–
Output / 1M$20.00$12.00
Context window1M1M
Notes–Preview. Higher rate over 200K tokens

Monthly cost by workload

WorkloadClaude Opus 5.5Gemini 3.1 ProDifference
Support chatbot
60,000 req · 1,500 in / 300 out
$720$396Gemini 3.1 Pro 1.8× cheaper
Document summaries
20,000 req · 6,000 in / 400 out
$640$336Gemini 3.1 Pro 1.9× cheaper
Coding assistant
30,000 req · 4,000 in / 800 out
$960$528Gemini 3.1 Pro 1.8× cheaper
RAG search
100,000 req · 2,500 in / 250 out
$1,500$800Gemini 3.1 Pro 1.9× cheaper

Standard rates, no caching or batch discounts. Sources: ai.google.dev · platform.claude.com

Try your own numbers

Start from a use case

1,000 tokens is about 750 English words. Input includes your system prompt, chat history and any retrieved documents.

Gemini 3.1 Pro
GoogleCheapest
$396 /mo
Claude Opus 5.5
Anthropic
$720 /mo

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