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.

S2 ProFish Audio Remove
Qwen3 ASR 1.7BQwen Remove
GPT-6 LunaOpenAI Remove
Claude Sonnet 5.5Anthropic Remove

4 is the maximum. Remove one to add another.

s2-pro vs qwen3-asr-1.7b vs gpt-6-luna vs claude-sonnet-5.5
Attribute	S2 Pros2-pro	Qwen3 ASR 1.7Bqwen3-asr-1.7b	GPT-6 Lunagpt-6-luna	Claude Sonnet 5.5claude-sonnet-5.5
Pricing
Input	$0 / 1M	$0 / 1M	$0.10 / 1M	$2.00 / 1M
Output	$0 / 1M	$0 / 1M	$0.50 / 1M	$10.00 / 1M
Cache Write (5m)	Not applicable	Not applicable	$0.10 / 1M	$2.50 / 1M
Cache Write (1h)	Not applicable	Not applicable	$0.10 / 1M	$4.00 / 1M
Cache Read	Not applicable	Not applicable	$0.10 / 1M	$0.20 / 1M
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	N/A	N/A	1.1M	1M
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	No	No	Yes	Yes
Function Calling	No	No	Yes	Yes
JSON Mode	No	No	Yes	Yes
Streaming	No	No	Yes	Yes
Catalogue
Provider	Fish Audio	Qwen	OpenAI	Anthropic
Category	voice	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	2026-08-13	—	—
Description
Summary	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	Qwen3-ASR 1.7B speech-to-text. Billed per second of audio.	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.