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.

S1Fish Audio Remove
GPT-6 LunaOpenAI Remove
Claude Sonnet 5.5Anthropic Remove
Voxtral Mini 3B 2507Mistral AI Remove

4 is the maximum. Remove one to add another.

s1 vs gpt-6-luna vs claude-sonnet-5.5 vs voxtral-mini-3b-2507
Attribute	S1s1	GPT-6 Lunagpt-6-luna	Claude Sonnet 5.5claude-sonnet-5.5	Voxtral Mini 3B 2507voxtral-mini-3b-2507
Pricing
Input	$0 / 1M	$0.10 / 1M	$2.00 / 1M	$0 / 1M
Output	$0 / 1M	$0.50 / 1M	$10.00 / 1M	$0 / 1M
Cache Write (5m)	Not applicable	$0.10 / 1M	$2.50 / 1M	Not applicable
Cache Write (1h)	Not applicable	$0.10 / 1M	$4.00 / 1M	Not applicable
Cache Read	Not applicable	$0.10 / 1M	$0.20 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	N/A	1.1M	1M	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	Yes	Yes	No
Function Calling	No	Yes	Yes	No
JSON Mode	No	Yes	Yes	No
Streaming	No	Yes	Yes	No
Catalogue
Provider	Fish Audio	OpenAI	Anthropic	Mistral AI
Category	voice	chat	chat	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	2026-07-29	—	—	2026-08-13
Description
Summary	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.	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.	Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, serving as a direct upgrade to Sonnet 5. It excels at feature development, bug fixing, and creating polished documents, presentations, and spreadsheets, while offering clearer writing and communication than its predecessor.	Mistral AI Voxtral Mini (3B) speech-to-text. Billed per second of audio.