Model comparison

Hunyuan Hy4 preview vs Laguna S 2.1

Input: $0.834
Output: $2.501
Context: 1M
Released: 2026-08-28

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

Short answer

Hunyuan Hy4 preview scores higher on 4 of the 4 benchmarks both models report; Laguna S 2.1 is cheaper on input tokens ($0.1 vs $0.8 per 1M, 9.3×).

Specs and pricing side by side

Spec	Hunyuan Hy4 preview	Laguna S 2.1
Maker	Tencent	Poolside
Released	2026-08-28	2026-07-21
Context window	1M	1Msame
Input price	$0.834	$0.09
Output price	$2.501	$0.18
Parameters	770B total · 49B active	118B total · 8B active
License	Apache-2.0	OpenMDW-1.1
Weights	Open weights	Open weightssame
Modalities	Text	Textsame

Not published by either maker: max output, knowledge cutoff.

Benchmarks both models report

Benchmark	Hunyuan Hy4 preview	Laguna S 2.1
Terminal-Bench 2.1	85.4%	70.2%
SWE-bench Multilingual	82.9%	78.5%
SWE-bench Pro	65.7%	59.4%
DeepSWE	64.3%	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 Hunyuan Hy4 preview if…

You care about Terminal-Bench 2.1, SWE-bench Multilingual, SWE-bench Pro (it scores higher on 4 shared benchmarks).
Your use case is: self-hosted agentic coding and long-horizon software engineering via vLLM or SGLang.

Pick Laguna S 2.1 if…

Cost matters: input tokens cost 9.3× less ($0.1 vs $0.8 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, Hunyuan Hy4 preview or Laguna S 2.1?

Hunyuan Hy4 preview scores higher on 4 of the 4 benchmarks both models report; Laguna S 2.1 is cheaper on input tokens ($0.1 vs $0.8 per 1M, 9.3×). 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?

Hunyuan Hy4 preview: $0.834 input, $2.501 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 Hunyuan Hy4 preview and Laguna S 2.1?

Hunyuan Hy4 preview offers 1M; Laguna S 2.1 offers 1M.

Is Hunyuan Hy4 preview newer than Laguna S 2.1?

Hunyuan Hy4 preview was released 2026-08-28; Laguna S 2.1 was released 2026-07-21.