opus-mt-zh-en vs Hy-MT2-1.8B

Specs, VRAM requirements and download trends — updated 10 November 2026.

Helsinki-NLP · A · Open weights
Params
—
Context
512
30d
694 K
cc-by-4.0 · commercial OK
tencent · B · Open weights
Params
2.0 B
Context
262,144
30d
26 K
apache-2.0 · commercial OK

Specification comparison

Differences are highlighted; identical values are muted.

Specification opus-mt-zh-en Hy-MT2-1.8B
Deployment Open weights Open weights · also via API
Parameters — 2.0 B
Architecture MarianMTModel HunYuanDenseV1ForCausalLM
Context length 512 262,144
Licence cc-by-4.0 apache-2.0
Commercial use Allowed Allowed
Languages 2 36
Downloads 30d 693,691 25,508
Downloads all time 69.7 M 291 K
Quantizations on the Hub — SAFETENSORS
Gated No No
First seen on the Hub 2022-03-02 2026-05-11
API input price / 1M tokens not on OpenRouter $0.044
API output price / 1M tokens not on OpenRouter $0.18
Est. cost per 1M input + 1M output tokens not on OpenRouter $0.22
Cached input / 1M tokens not on OpenRouter —
AA Intelligence Index not on OpenRouter —
AA Coding Index not on OpenRouter —
AA Agentic Index not on OpenRouter —
Max output tokens not on OpenRouter 4,096
API providers not on OpenRouter 1
Tool calling not on OpenRouter No
Reasoning mode not on OpenRouter No

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

Hy-MT2-1.8B $0.22

Download trend

Daily snapshots, last 90 days (13 Aug – 10 Nov)

694 K26 K
opus-mt-zh-en Hy-MT2-1.8B

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

Hy-MT2-1.8B · fp16 @ 256K ctx 14.8 GB / 24 GB
✅ Runs comfortably

Adjacent comparisons