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.

DeepSeek V4.1 FlashDeepSeek Remove
Perceptron Mk1.5Perceptron Remove
S2 ProFish Audio Remove
S1Fish Audio Remove

4 is the maximum. Remove one to add another.

deepseek-v4.1-flash vs perceptron-mk1.5 vs s2-pro vs s1
Attribute	DeepSeek V4.1 Flashdeepseek-v4.1-flash	Perceptron Mk1.5perceptron-mk1.5	S2 Pros2-pro	S1s1
Pricing
Input	$0.30 / 1M	$0.15 / 1M	$0 / 1M	$0 / 1M
Output	$1.20 / 1M	$1.50 / 1M	$0 / 1M	$0 / 1M
Cache Write (5m)	$0.30 / 1M	$0.15 / 1M	Not applicable	Not applicable
Cache Write (1h)	$0.30 / 1M	$0.15 / 1M	Not applicable	Not applicable
Cache Read	$0.30 / 1M	$0.15 / 1M	Not applicable	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	36.9K	N/A	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	No	No	No
Function Calling	Yes	No	No	No
JSON Mode	Yes	No	No	No
Streaming	Yes	Yes	No	No
Catalogue
Provider	DeepSeek	Perceptron	Fish Audio	Fish Audio
Category	chat	chat	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	2026-09-25	2026-07-29	2026-07-29
Description
Summary	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.	Perceptron Mk1.5 chat model that accepts audio input. Audio and text input are billed per token.	Fish Audio S2 Pro text-to-speech. Billed per UTF-8 byte of input text.	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.