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 Sol ProOpenAI Remove
Perceptron Mk1.5Perceptron Remove
GPT-6 Luna ProOpenAI Remove
S1Fish Audio Remove

4 is the maximum. Remove one to add another.

gpt-6-sol-pro vs perceptron-mk1.5 vs gpt-6-luna-pro vs s1
Attribute	GPT-6 Sol Progpt-6-sol-pro	Perceptron Mk1.5perceptron-mk1.5	GPT-6 Luna Progpt-6-luna-pro	S1s1
Pricing
Input	$2.00 / 1M	$0.15 / 1M	$0.10 / 1M	$0 / 1M
Output	$10.00 / 1M	$1.50 / 1M	$0.50 / 1M	$0 / 1M
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	1.1M	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	OpenAI	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	—	2026-07-29
Description
Summary	GPT-6 Sol Pro uses the same underlying model as GPT-6 Sol, but runs with reasoning.mode set to pro for higher-quality responses on complex and demanding tasks. Optimized for deeper reasoning, greater accuracy, and more reliable multi-step execution, it is particularly well suited for agentic coding, long-horizon software engineering, professional analysis, and complex automated workflows where solution quality takes priority over latency and cost.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	GPT-6 Luna Pro uses the same underlying model as GPT-6 Luna, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. It combines Luna's speed and cost efficiency with deeper reasoning and more reliable multi-step execution, making it well suited for advanced coding, computer use, and agentic workflows where higher solution quality is needed without moving to a larger GPT-6 tier.	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.