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
Universal-3.5 ProAssemblyAI Remove
DeepSeek V4.1 FlashDeepSeek Remove
Gemini 3.5 TranscribeGoogle Remove

4 is the maximum. Remove one to add another.

s1 vs universal-3-5-pro vs deepseek-v4.1-flash vs gemini-3.5-transcribe
Attribute	S1s1	Universal-3.5 Prouniversal-3-5-pro	DeepSeek V4.1 Flashdeepseek-v4.1-flash	Gemini 3.5 Transcribegemini-3.5-transcribe
Pricing
Input	$0 / 1M	$0 / 1M	$0.30 / 1M	$0 / 1M
Output	$0 / 1M	$0 / 1M	$1.20 / 1M	$0 / 1M
Cache Write (5m)	Not applicable	Not applicable	$0.30 / 1M	Not applicable
Cache Write (1h)	Not applicable	Not applicable	$0.30 / 1M	Not applicable
Cache Read	Not applicable	Not applicable	$0.30 / 1M	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	N/A	N/A	1M	98.3K
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	No
Streaming	No	No	Yes	No
Catalogue
Provider	Fish Audio	AssemblyAI	DeepSeek	Google
Category	voice	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	2026-09-22	—	2026-09-25
Description
Summary	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.	AssemblyAI Universal-3.5 Pro speech-to-text. Billed per second of audio.	DeepSeek V4.1 Flash is a cost-efficient sparse Mixture-of-Experts (MoE) model in DeepSeek's V4.1 family, optimized for coding, reasoning, and agentic workflows. Despite its efficiency-focused positioning, DeepSeek reports that it surpasses the previous V4 Pro in performance, inference speed, and overall task completion time. The model is particularly strong at long-horizon, multi-step execution, making it well suited for coding agents, complex problem solving, and autonomous workflows that must reliably carry tasks through to completion.	Google Gemini 3.5 Transcribe speech-to-text. Billed per input and output token.