Model comparison

DeepSeek-V4-Pro vs Laguna S 2.1

Input: $0.66 off-peak · $1.32 peak
Output: $1.98 off-peak · $3.96 peak
Context: 1M
Released: 2026-08-13

Input: $0.09
Output: $0.18
Context: 1M
Released: 2026-07-21

Short answer

DeepSeek-V4-Pro scores higher on 3 of the 3 benchmarks both models report; Laguna S 2.1 is cheaper on input tokens ($0.1 vs $0.7 per 1M, 7.3×).

Specs and pricing side by side

Spec	DeepSeek-V4-Pro	Laguna S 2.1
Maker	DeepSeek	Poolside
Released	2026-08-13	2026-07-21
Context window	1M	1Msame
Max output	384K	not published
Input price	$0.66 off-peak · $1.32 peak	$0.09
Output price	$1.98 off-peak · $3.96 peak	$0.18
Parameters	1.6T total · 49B active	118B total · 8B active
License	MIT	OpenMDW-1.1
Weights	Open weights	Open weightssame
Modalities	Text	Textsame

Not published by either maker: knowledge cutoff.

Benchmarks both models report

Benchmark	DeepSeek-V4-Pro	Laguna S 2.1
Terminal Bench 2.1	87.9%	70.2%
Toolathlon-Verified	74.1%	49.7%
DeepSWE	62.7%	40.4%

Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.

Which one should you pick?

Pick DeepSeek-V4-Pro if…

You care about Terminal Bench 2.1, Toolathlon-Verified, DeepSWE (it scores higher on 3 shared benchmarks).
Your use case is: long-document and large-codebase analysis that needs the full 1M-token window.

Pick Laguna S 2.1 if…

Cost matters: input tokens cost 7.3× less ($0.1 vs $0.7 per 1M).
Your use case is: reach for it when you want to move high-volume agentic coding off a metered API and onto your own hardware without giving up long-horizon performance.

FAQ

Which is better, DeepSeek-V4-Pro or Laguna S 2.1?

DeepSeek-V4-Pro scores higher on 3 of the 3 benchmarks both models report; Laguna S 2.1 is cheaper on input tokens ($0.1 vs $0.7 per 1M, 7.3×). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.

How much cheaper is Laguna S 2.1?

DeepSeek-V4-Pro: $0.66 off-peak · $1.32 peak input, $1.98 off-peak · $3.96 peak output. Laguna S 2.1: $0.09 input, $0.18 output (list API prices as published by each maker).

What are the context windows of DeepSeek-V4-Pro and Laguna S 2.1?

DeepSeek-V4-Pro offers 1M with up to 384K output; Laguna S 2.1 offers 1M.

Is DeepSeek-V4-Pro newer than Laguna S 2.1?

DeepSeek-V4-Pro was released 2026-08-13; Laguna S 2.1 was released 2026-07-21.