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.

S2 ProFish Audio Remove
GPT-6 Sol ProOpenAI Remove
Claude Sonnet 5.5Anthropic Remove
Transcribe 1Fish Audio Remove

4 is the maximum. Remove one to add another.

s2-pro vs gpt-6-sol-pro vs claude-sonnet-5.5 vs transcribe-1
Attribute	S2 Pros2-pro	GPT-6 Sol Progpt-6-sol-pro	Claude Sonnet 5.5claude-sonnet-5.5	Transcribe 1transcribe-1
Pricing
Input	$0 / 1M	$2.00 / 1M	$2.00 / 1M	$0 / 1M
Output	$0 / 1M	$10.00 / 1M	$10.00 / 1M	$0 / 1M
Cache Write (5m)	Not applicable	$2.00 / 1M	$2.50 / 1M	Not applicable
Cache Write (1h)	Not applicable	$2.00 / 1M	$4.00 / 1M	Not applicable
Cache Read	Not applicable	$2.00 / 1M	$0.20 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	N/A	1.1M	1M	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	Yes	Yes	No
Function Calling	No	Yes	Yes	No
JSON Mode	No	Yes	Yes	No
Streaming	No	Yes	Yes	No
Catalogue
Provider	Fish Audio	OpenAI	Anthropic	Fish Audio
Category	voice	chat	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-07-29	—	—	2026-07-29
Description
Summary	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	GPT-6 Sol Pro uses the same underlying model as GPT-6 Sol, but runs with reasoning.mode set to pro for higher-quality responses on complex and demanding tasks. Optimized for deeper reasoning, greater accuracy, and more reliable multi-step execution, it is particularly well suited for agentic coding, long-horizon software engineering, professional analysis, and complex automated workflows where solution quality takes priority over latency and cost.	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.	Fish Audio Transcribe 1 speech-to-text. Billed per second of audio.