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.

Perceptron Mk1.5Perceptron Remove
Transcribe 1 ProFish Audio Remove
GPT-6 AstraOpenAI Remove
S2 ProFish Audio Remove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs transcribe-1-pro vs gpt-6-astra vs s2-pro
Attribute	Perceptron Mk1.5perceptron-mk1.5	Transcribe 1 Protranscribe-1-pro	GPT-6 Astragpt-6-astra	S2 Pros2-pro
Pricing
Input	$0.15 / 1M	$0 / 1M	$10.00 / 1M	$0 / 1M
Output	$1.50 / 1M	$0 / 1M	$50.00 / 1M	$0 / 1M
Cache Write (5m)	$0.15 / 1M	Not applicable	$10.00 / 1M	Not applicable
Cache Write (1h)	$0.15 / 1M	Not applicable	$10.00 / 1M	Not applicable
Cache Read	$0.15 / 1M	Not applicable	$10.00 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	36.9K	N/A	1M	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	No	Yes	No
Function Calling	No	No	Yes	No
JSON Mode	No	No	Yes	No
Streaming	Yes	No	Yes	No
Catalogue
Provider	Perceptron	Fish Audio	OpenAI	Fish Audio
Category	chat	voice	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-09-25	2026-09-24	—	2026-07-29
Description
Summary	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	Fish Audio Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.	GPT-6 Astra is OpenAI's flagship model for demanding end-to-end professional work, designed for advanced analysis, software engineering, deep research, scientific tasks, and document creation. It is particularly strong in long-horizon agentic workflows, including tasks that require sustained reasoning, tool orchestration, and computer and browser use, making it well suited for complex autonomous workflows and production-grade knowledge work.	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.