Hy Image 3.5 Preview- input
- $0.417
- cached
- $0.021
- output
- $1.2505
- Context
- 1Mtokens
- Listed
- 1w ago
- Size
- —parameters
Cost/1M tokens
Hy4 preview is an early version in Tencent Hunyuan's Hy4 iteration, released and open-sourced by Tencent. Tencent's launch announcement says it ranks among the top tier of open-source models, attributing its gains to a substantially larger training scale together with advances in pre-training and post-training. It is built for coding, office work, and scientific research, and is positioned as a foundation for productivity agents.
- Multimodal model
- Open weights
- Accepts images
- 1M context
- Reasoning
- Tools
- Structured output
How it compares
Score vs. costAgent Arena
Each model at its best score · Dashed: the best score at each cost
Agent Arena
- Tencent
- Anthropic
- Google DeepMind
- OpenAI
- Moonshot AI
- xAI
- Xiaomi
- Z.ai
- MiniMax
- Meta
Vs. your stack
Add the models you use to see how this one compares.
Sign inAdditional source evidence
- Source model
- tencent/hy4
- Source family
- Hy
- Last updated
- 2026-11-04
- Model context
- 1M
- Maximum input
- 983K
- Model output limit
- 66K
- Open weights
- No
- File attachments
- Yes
- Reasoning
- Yes
- Tool calling
- Yes
- Temperature control
- Yes
Complete source record (JSON)
{
"id": "tencent/hy4",
"name": "Hy4",
"description": "A next-generation multimodal productivity model with significantly enhanced Agent and complex task execution capabilities.",
"family": "Hy",
"last_updated": "2026-11-04",
"attachment": true,
"reasoning": true,
"tool_call": true,
"temperature": true,
"modalities": {
"input": [
"text",
"image"
],
"output": [
"text"
]
},
"limit": {
"context": 1048576,
"input": 983010,
"output": 65536
},
"release_date": "2026-11-04",
"open_weights": false
}Frequently asked questions
API and pricing
Hy4 costs $0.417 per 1M input tokens and $1.2505 per 1M output tokens, tracked at 1 paid provider.
Yes, Hy4 supports prompt caching. Cached input costs $0.021 per 1M tokens versus $0.417 uncached, a 95% discount.
A typical Hy4 request of 10,000 input tokens and 1,000 output tokens costs $0.0054205 at the cheapest provider, Tencent.
Yes, Hy4 endpoints were reliable in the last day. 1 of 1 endpoint with uptime data was at 99% uptime or better, and the best uptime was 99.9% by Tencent.
Privacy and data
Tencent is the Hy4 provider offering zero data retention (ZDR eligible or 0-day retention).
Yes, Hy4 has open weights, so you can self-host it for full control of your data.
Capabilities and specs
Hy4 has a context window of 1M tokens (1,048,576) and a maximum output of 66K tokens (65,536).
Yes, Hy4 can read images. Its listed input modalities are text and image, while audio, video and PDFs are not listed.
Yes, Hy4 supports tool calling (function calling).
Yes, Hy4 supports structured output (JSON schema or JSON mode).
Yes, Hy4 has a reasoning mode. Effort levels are high, low and none, with high as the default, and reasoning is not always on. A provider offers the reasoning_effort effort setting, and 1 of 1 tracked providers expose reasoning.
Quality and benchmarks
Hy4 ranks 14 on Agent Arena, which is Arena's own rank, with a score of 0.1.
Yes, Hy4 is ahead of its predecessor Hy3 on Agent Arena, and behind or level on none.
Closest matches to Hy4, matched on model kind, blended price and release date, are DeepSeek V4.1 Flash 1017 by DeepSeek at $0.525 per 1M tokens, MiMo-V2.6-Pro by Xiaomi at $0.5438 per 1M tokens, and DeepSeek V4 Flash Vision Exp by DeepSeek at $0.66 per 1M tokens.
DeepSeek V4.1 Flash 1017Hy4 vs DeepSeek V4.1 Flash 1017MiMo-V2.6-ProHy4 vs MiMo-V2.6-ProDeepSeek V4 Flash Vision ExpHy4 vs DeepSeek V4 Flash Vision Exp
Versions and lineage
Hy4 and Hy4 preview both have a context window of 1M tokens (1,048,576). Hy4 costs $0.417 input and $1.2505 output per 1M tokens and was released November 4, 2026, while Hy4 preview costs $0.834 input and $2.501 output per 1M tokens and was released August 28, 2026.
Licensing and access
Hy4 has open weights.
You can download the Hy4 weights from the Hugging Face repository tencent/Hy4.
Basics
Hy4 was made by Tencent and was first listed on OpenRouter on November 4, 2026.
No, Hy4 is not free to use via API. It costs $0.417 input and $1.2505 output per 1M tokens, though it has open weights.
Generated from Vertical Tabs data, updated November 12, 2026.
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