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
S1Fish Audio Remove
GPT-6 Luna ProOpenAI Remove
Gemini 3.5 TranscribeGoogle Remove

4 is the maximum. Remove one to add another.

muse-spark-1.3 vs s1 vs gpt-6-luna-pro vs gemini-3.5-transcribe
Attribute	Muse Spark 1.3muse-spark-1.3	S1s1	GPT-6 Luna Progpt-6-luna-pro	Gemini 3.5 Transcribegemini-3.5-transcribe
Pricing
Input	$1.25 / 1M	$0 / 1M	$0.10 / 1M	$0 / 1M
Output	$4.25 / 1M	$0 / 1M	$0.50 / 1M	$0 / 1M
Cache Write (5m)	$1.25 / 1M	Not applicable	$0.10 / 1M	Not applicable
Cache Write (1h)	$1.25 / 1M	Not applicable	$0.10 / 1M	Not applicable
Cache Read	$1.25 / 1M	Not applicable	$0.10 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	N/A	1.1M	98.3K
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	Yes	Yes
Function Calling	Yes	No	Yes	Yes
JSON Mode	Yes	No	Yes	No
Streaming	Yes	No	Yes	No
Catalogue
Provider	Meta	Fish Audio	OpenAI	Google
Category	chat	voice	chat	voice
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 S1 text-to-speech. Billed per UTF-8 byte of input text.	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.	Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.