GPT-6.1 Sol vs Claude Sonnet 5.5: cost comparison

GPT-6.1 Sol and Claude Sonnet 5.5 have the same list prices per token, but for the same text GPT-6.1 Sol works out about 1.3× cheaper, because Claude 4.7 and later count roughly 30% more tokens.

GPT-6.1 Sol OpenAI

$2.00input /1M

$0.10cached /1M

$10.00output /1M

Prompts over 272,000 tokens are billed at $4.00 input / $0.20 cached / $15.00 output per 1M tokens for the whole request.
Batch processing: 50% off input and output ($1.00 / $5.00 per 1M tokens).

Claude Sonnet 5.5 Anthropic

$2.00input /1M

$0.10cached /1M

$10.00output /1M

Uses Anthropic's newer tokenizer, which produces about 30% more tokens for the same text than Claude Sonnet 4.6 and earlier.
Batch processing: 50% off input and output ($1.00 / $5.00 per 1M tokens).

Cost per 1,000 requests

Workload	GPT-6.1 Sol	Claude Sonnet 5.5	Difference
Chatbot reply1,500 input / 400 output tokens	$7.00	$9.10	1.3×
RAG answer8,000 input / 600 output tokens	$22.00	$28.60	1.3×
Agent step30,000 input (80% cached) / 800 output	$22.40	$29.12	1.3×
Summarize a long report60,000 input / 1,200 output tokens	$132.00	$171.60	1.3×
Classify a ticket400 input / 10 output tokens	$0.90	$1.17	1.3×

Standard pricing, no batch discount. Claude 4.7+ costs include its ~30% higher token count for the same text. Price is only one factor; quality, speed, context length and rate limits matter too, so test both on your own prompts.

Run your own numbers in the calculator →

More comparisons

More free tools from us

CleanStatement →

Convert bank and credit card statement PDFs to Excel or CSV. Runs in your browser; the file is never uploaded.

FillDesk →

Answer vendor security questionnaires from your own answer library and export to Word or Excel.