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.

Claude Sonnet 5.5Anthropic Remove
DeepSeek V4.1 FlashDeepSeek Remove
S1Fish Audio Remove
Nova-3Deepgram Remove

4 is the maximum. Remove one to add another.

claude-sonnet-5.5 vs deepseek-v4.1-flash vs s1 vs nova-3
Attribute	Claude Sonnet 5.5claude-sonnet-5.5	DeepSeek V4.1 Flashdeepseek-v4.1-flash	S1s1	Nova-3nova-3
Pricing
Input	$2.00 / 1M	$0.30 / 1M	$0 / 1M	$0 / 1M
Output	$10.00 / 1M	$1.20 / 1M	$0 / 1M	$0 / 1M
Cache Write (5m)	$2.50 / 1M	$0.30 / 1M	Not applicable	Not applicable
Cache Write (1h)	$4.00 / 1M	$0.30 / 1M	Not applicable	Not applicable
Cache Read	$0.20 / 1M	$0.30 / 1M	Not applicable	Not applicable
Web Search	$0 / 1M	$0 / 1M	$0 / 1M	$0 / 1M
Context
Max context	1M	1M	N/A	N/A
Max output	N/A	N/A	N/A	N/A
Capabilities
Vision	Yes	Yes	No	No
Function Calling	Yes	Yes	No	No
JSON Mode	Yes	Yes	No	No
Streaming	Yes	Yes	No	No
Catalogue
Provider	Anthropic	DeepSeek	Fish Audio	Deepgram
Category	chat	chat	voice	voice
Charge type	Pay As You Go	Pay As You Go	Pay As You Go	Pay As You Go
Released	—	—	2026-07-29	2026-07-15
Description
Summary	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.	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.	Fish Audio S1 text-to-speech. Billed per UTF-8 byte of input text.	Deepgram Nova-3 speech-to-text. Billed per second of audio.