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.

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

4 is the maximum. Remove one to add another.

grok-4.20-beta vs perceptron-mk1.5 vs gpt-6-luna vs transcribe-1-pro
Attribute	Grok 4.20 Betagrok-4.20-beta	Perceptron Mk1.5perceptron-mk1.5	GPT-6 Lunagpt-6-luna	Transcribe 1 Protranscribe-1-pro
Pricing
Input	$2.00 / 1M	$0.15 / 1M	$0.10 / 1M	— Not priced per input token
Output	$6.00 / 1M	$1.50 / 1M	$0.50 / 1M	— Not priced per output token
Cache Write (5m)	$2.00 / 1M	$0.15 / 1M	$0.10 / 1M	Not applicable
Cache Write (1h)	$2.00 / 1M	$0.15 / 1M	$0.10 / 1M	Not applicable
Cache Read	$2.00 / 1M	$0.15 / 1M	$0.10 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	2M	36.9K	1.1M	N/A
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	Yes	Yes	No
Catalogue
Provider	xAI	Perceptron	OpenAI	Fish Audio
Category	chat	chat	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
Description
Summary	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.	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.