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.

Muse Spark 1.3Meta Remove
S2 ProFish Audio Remove
GPT-6 Astra ProOpenAI Remove
Perceptron Mk1.5Perceptron Remove

4 is the maximum. Remove one to add another.

muse-spark-1.3 vs s2-pro vs gpt-6-astra-pro vs perceptron-mk1.5
Attribute	Muse Spark 1.3muse-spark-1.3	S2 Pros2-pro	GPT-6 Astra Progpt-6-astra-pro	Perceptron Mk1.5perceptron-mk1.5
Pricing
Input	$1.25 / 1M	$0 / 1M	$10.00 / 1M	$0.15 / 1M
Output	$4.25 / 1M	$0 / 1M	$50.00 / 1M	$1.50 / 1M
Cache Write (5m)	$1.25 / 1M	Not applicable	$10.00 / 1M	$0.15 / 1M
Cache Write (1h)	$1.25 / 1M	Not applicable	$10.00 / 1M	$0.15 / 1M
Cache Read	$1.25 / 1M	Not applicable	$10.00 / 1M	$0.15 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	N/A	1M	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	Meta	Fish Audio	OpenAI	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	—	2026-07-29	—	2026-09-25
Description
Summary	Muse Spark 1.3 is Meta's multimodal reasoning model designed for long-running agentic, multi-agent, and coding workflows. It maintains context and information across extended tasks, enabling reliable execution in complex, multi-step environments. The model is optimized to resolve conflicting information, seek clarification or confirmation when necessary, and execute concisely, making it well suited for autonomous agents, collaborative multi-agent systems, and long-horizon software engineering workflows.	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	GPT-6 Astra Pro uses the same underlying model as GPT-6 Astra, but runs with reasoning.mode set to pro for higher-quality responses on complex tasks. Optimized for deeper reasoning, greater accuracy, and more reliable multi-step execution, it is well suited for demanding coding, analysis, and agentic workflows where solution quality takes priority over speed and cost.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.