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
MAI-Transcribe 2Microsoft Remove
GPT-6 LunaOpenAI Remove
S1Fish Audio Remove

4 is the maximum. Remove one to add another.

perceptron-mk1.5 vs mai-transcribe-2 vs gpt-6-luna vs s1
Attribute	Perceptron Mk1.5perceptron-mk1.5	MAI-Transcribe 2mai-transcribe-2	GPT-6 Lunagpt-6-luna	S1s1
Pricing
Input	$0.15 / 1M	$0 / 1M	$0.10 / 1M	$0 / 1M
Output	$1.50 / 1M	$0 / 1M	$0.50 / 1M	$0 / 1M
Cache Write (5m)	$0.15 / 1M	Not applicable	$0.10 / 1M	Not applicable
Cache Write (1h)	$0.15 / 1M	Not applicable	$0.10 / 1M	Not applicable
Cache Read	$0.15 / 1M	Not applicable	$0.10 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	36.9K	N/A	1.1M	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	Microsoft	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	2026-09-03	—	2026-07-29
Description
Summary	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	Microsoft MAI-Transcribe-2 speech-to-text. Billed per second of audio.	GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, optimized for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic tasks. It combines low-cost, responsive inference with the GPT-6 family’s improvements in factual reliability and clear, concise communication. At higher reasoning effort, GPT-6 Luna can also handle complex software engineering and computer-use workflows that previously required a Sol-tier model, making it a versatile choice for scalable production applications that need to balance speed, cost, and capability.	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.