Hy-MT2-1.8B
Summary
Hy-MT2-1.8B is an open-weight language model from Tencent (Hunyuan), released on 20 Aug 2026. It accepts text and generates text, with a 8K-token context window and up to 4K output tokens per response. As of 17 Oct 2026, the lowest listed API price is $0.04 per million input tokens and $0.18 per million output tokens (OpenRouter), across 1 provider we track.
Tencent Hy reasoning model for coding, instruction following, and agent tasks
Last verified 17 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Tencent (Hunyuan) |
|---|---|
| Release date | 20 Aug 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [Hugging Face] |
| License | apache-2.0 [Hugging Face] |
| Parameters | 2B [Hugging Face] |
| Context window | 8K (8,192 tokens) [models.dev] |
| Max output | 4K tokens [models.dev] |
| Input | Text [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | No [models.dev] |
| Tool calling | No [models.dev] |
| Structured output | No [models.dev] |
| Hugging Face | tencent/Hy-MT2-1.8B [Hugging Face] |
Hy-MT2-1.8B API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter tencent/hy-mt2-1.8b | $0.04 | $0.18 | – | 8K | OpenRouter, 17 Oct 2026 |
Running Hy-MT2-1.8B locally
Estimated memory, from the parameter count and the architecture in config.json on Hugging Face. Includes about 0.8 GB of runtime overhead.
| Quantization | Weights | Total, 8K context | Total, 32K context |
|---|---|---|---|
| Q4_K_M (4-bit) | 1.2 GB | 2.6 GB | 2.6 GB |
| Q8_0 (8-bit) | 2.2 GB | 3.5 GB | 3.5 GB |
| FP16 / BF16 (16-bit) | 4.1 GB | 5.4 GB | 5.4 GB |
At 4-bit with an 8K conversation, Hy-MT2-1.8B needs about 2.6 GB, so it fits on a graphics card with 8 GB or more, such as the NVIDIA GeForce RTX 4060 8 GB. Check your own hardware.
Frequently asked questions
What is the context window of Hy-MT2-1.8B?
Hy-MT2-1.8B has a context window of 8,192 tokens (8K) and can generate up to 4,096 tokens in a single response, according to models.dev.
How much does the Hy-MT2-1.8B API cost?
Hy-MT2-1.8B is listed from $0.04 per million input tokens and $0.18 per million output tokens (OpenRouter). Prices last verified 17 Oct 2026.
Is Hy-MT2-1.8B open source?
Hy-MT2-1.8B is an open-weight model: its weights are published on Hugging Face as tencent/Hy-MT2-1.8B under the apache-2.0 license. Check the license terms before commercial use.
When was Hy-MT2-1.8B released?
Tencent (Hunyuan) released Hy-MT2-1.8B on 20 Aug 2026, according to models.dev.
How much VRAM does Hy-MT2-1.8B need?
About 2.6 GB at 4-bit (Q4_K_M) with an 8K-token conversation, and about 3.5 GB at 8-bit. The 4-bit model fits on a graphics card with 8 GB or more, such as the NVIDIA GeForce RTX 4060 8 GB. These are estimates from the model's published parameter count and architecture.
Change history
- License changed from none to apache-2.0
- Parameter count changed from none to 2B
- Now listed on OpenRouter
- Added to the directory