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.

GPT-6 LunaOpenAI Remove
Transcribe 1 ProFish Audio Remove
Grok 4.20 BetaxAI Remove
Perceptron Mk1.5Perceptron Remove

4 is the maximum. Remove one to add another.

gpt-6-luna vs transcribe-1-pro vs grok-4.20-beta vs perceptron-mk1.5
Attribute	GPT-6 Lunagpt-6-luna	Transcribe 1 Protranscribe-1-pro	Grok 4.20 Betagrok-4.20-beta	Perceptron Mk1.5perceptron-mk1.5
Pricing
Input	$0.10 / 1M	— Not priced per input token	$2.00 / 1M	$0.15 / 1M
Output	$0.50 / 1M	— Not priced per output token	$6.00 / 1M	$1.50 / 1M
Cache Write (5m)	$0.10 / 1M	Not applicable	$2.00 / 1M	$0.15 / 1M
Cache Write (1h)	$0.10 / 1M	Not applicable	$2.00 / 1M	$0.15 / 1M
Cache Read	$0.10 / 1M	Not applicable	$2.00 / 1M	$0.15 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1.1M	N/A	2M	36.9K
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	Yes	No
Function Calling	Yes	No	Yes	No
JSON Mode	Yes	No	Yes	No
Streaming	Yes	No	Yes	Yes
Catalogue
Provider	OpenAI	Fish Audio	xAI	Perceptron
Category	chat	voice	chat	chat
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
Description
Summary	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 Transcribe 1 Pro speech-to-text with speaker labels; transcripts include speaker tags such as <\|speaker:0\|>. Billed per second of audio.	Grok 4.20 Beta is xAI's newest flagship model, designed for high-performance reasoning with industry-leading speed and strong agentic tool-calling capabilities. It emphasizes strict prompt adherence and low hallucination rates, enabling highly reliable and precise responses across complex tasks. Optimized for agent workflows and real-time applications, Grok 4.20 Beta delivers consistent, truthful outputs while maintaining fast inference and strong task execution reliability.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.