Compare models

Put up to 4 models beside each other — token prices, context windows, capabilities and provider, from the same catalogue the model pages read.

Claude Sonnet 5.5Anthropic Remove
GPT-6 SolOpenAI Remove
S2 ProFish Audio Remove

Add a model

claude-sonnet-5.5 vs gpt-6-sol vs s2-pro
Attribute	Claude Sonnet 5.5claude-sonnet-5.5	GPT-6 Solgpt-6-sol	S2 Pros2-pro
Pricing
Input	$2.00 / 1M	$2.00 / 1M	$0 / 1M
Output	$10.00 / 1M	$10.00 / 1M	$0 / 1M
Cache Write (5m)	$2.50 / 1M	$2.00 / 1M	Not applicable
Cache Write (1h)	$4.00 / 1M	$2.00 / 1M	Not applicable
Cache Read	$0.20 / 1M	$2.00 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	1.1M	N/A
Max output	N/A	N/A	N/A
Capabilities
Vision	Yes	Yes	No
Function Calling	Yes	Yes	No
JSON Mode	Yes	Yes	No
Streaming	Yes	Yes	No
Catalogue
Provider	Anthropic	OpenAI	Fish Audio
Category	chat	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	—	2026-07-29
Description
Summary	Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor.	GPT-6 Sol is OpenAI's cost-efficient high-end model in the GPT-6 series, positioned between the flagship GPT-6 Astra and the fast GPT-6 Luna tier. It is designed for professional knowledge work, agentic coding, business workflow automation, and computer-use tasks, with particular strength in long-horizon software engineering across real-world codebases. GPT-6 Sol approaches Astra-level factual reliability at a significantly lower cost, while sharing its clear and concise communication style. This balance of capability, reliability, and efficiency makes it well suited for production agents, complex engineering workflows, and scalable professional applications	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.