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.

Gemini 3.5 TranscribeGoogle Remove
Perceptron Mk1.5Perceptron Remove
Grok STT 1.0xAI Remove
GPT-6 LunaOpenAI Remove

4 is the maximum. Remove one to add another.

gemini-3.5-transcribe vs perceptron-mk1.5 vs grok-stt-1.0 vs gpt-6-luna
Attribute	Gemini 3.5 Transcribegemini-3.5-transcribe	Perceptron Mk1.5perceptron-mk1.5	Grok STT 1.0grok-stt-1.0	GPT-6 Lunagpt-6-luna
Pricing
Input	$0 / 1M	$0.15 / 1M	$0 / 1M	$0.10 / 1M
Output	$0 / 1M	$1.50 / 1M	$0 / 1M	$0.50 / 1M
Cache Write (5m)	Not applicable	$0.15 / 1M	Not applicable	$0.10 / 1M
Cache Write (1h)	Not applicable	$0.15 / 1M	Not applicable	$0.10 / 1M
Cache Read	Not applicable	$0.15 / 1M	Not applicable	$0.10 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	98.3K	36.9K	N/A	1.1M
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	No	Yes
Function Calling	Yes	No	No	Yes
JSON Mode	No	No	No	Yes
Streaming	No	Yes	No	Yes
Catalogue
Provider	Google	Perceptron	xAI	OpenAI
Category	voice	chat	voice	chat
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-09-25	2026-09-25	2026-07-23	—
Description
Summary	Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	xAI Grok STT 1.0 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.