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claude-sonnet-5.5 vs transcribe-1-pro vs perceptron-mk1.5 vs speech-2.8-turbo
Attribute	Claude Sonnet 5.5claude-sonnet-5.5	Transcribe 1 Protranscribe-1-pro	Perceptron Mk1.5perceptron-mk1.5	Speech 2.8 Turbospeech-2.8-turbo
Pricing
Input	$2.00 / 1M	$0 / 1M	$0.15 / 1M	$0 / 1M
Output	$10.00 / 1M	$0 / 1M	$1.50 / 1M	$0 / 1M
Cache Write (5m)	$2.50 / 1M	Not applicable	$0.15 / 1M	Not applicable
Cache Write (1h)	$4.00 / 1M	Not applicable	$0.15 / 1M	Not applicable
Cache Read	$0.20 / 1M	Not applicable	$0.15 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	N/A	36.9K	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	No	No
Function Calling	Yes	No	No	No
JSON Mode	Yes	No	No	No
Streaming	Yes	No	Yes	No
Catalogue
Provider	Anthropic	Fish Audio	Perceptron	MiniMax
Category	chat	voice	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	2026-09-24	2026-09-25	2026-07-16
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.	Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	MiniMax Speech 2.8 Turbo text-to-speech. Billed per input character; each Chinese (Han) character counts as 2.