Price comparison · checked October 12, 2026

Claude Fable 5.1 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 Fable 5.1 costs $1,800. That makes Gemini 3.1 Pro 4.5× cheaper for this workload.

Claude Fable 5.1Gemini 3.1 Pro
ProviderAnthropicGoogle
Input / 1M$10.00$2.00
Cached input / 1M$0.25–
Output / 1M$50.00$12.00
Context window1M1M
Notes–Preview. Higher rate over 200K tokens

Monthly cost by workload

WorkloadClaude Fable 5.1Gemini 3.1 ProDifference
Support chatbot
60,000 req · 1,500 in / 300 out
$1,800$396Gemini 3.1 Pro 4.5× cheaper
Document summaries
20,000 req · 6,000 in / 400 out
$1,600$336Gemini 3.1 Pro 4.8× cheaper
Coding assistant
30,000 req · 4,000 in / 800 out
$2,400$528Gemini 3.1 Pro 4.5× cheaper
RAG search
100,000 req · 2,500 in / 250 out
$3,750$800Gemini 3.1 Pro 4.7× 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 Fable 5.1
Anthropic
$1,800 /mo

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