Tencent · Released Aug 28, 2026Hy4 preview
A next-generation productivity model with significantly enhanced Agent and complex task execution capabilities.
- Capability
- —No ECI score yet
- Input
- $0.834per 1M tokens
- Output
- $2.50per 1M tokens
- Context
- 1.02M64K max output
What it costs
- Input
- $0.834per million tokens
- Output
- $2.50per million tokens
- Cached input
- $0.042per million tokens
- Blended (3:1)
- $1.25pricier than 61% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $2.92 |
| Team assistant25M input + 5M output tokens | $33.35 |
| Production app250M input + 50M output tokens | $333.55 |
Official Tencent TokenHub API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Hy4 preview yet.
The details
- Lab
- Tencent
- Released
- Aug 28, 2026
- Context window
- 1,024,000 tokens
- Max output
- 64,000 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- Adjustable effort high
- Tool calling
- Yes
- Structured output
- No
- Weights
- Open weights
- API model ID
hy4-previewon Tencent TokenHub- Availability
- 13 API providerslisted on models.dev
More from Tencent
About Hy4 preview
How much does Hy4 preview cost?
Hy4 preview costs $0.834 input / $2.50 output per million tokens (official Tencent TokenHub API price). Cached input is $0.042 per million tokens. At a 3:1 input-to-output mix that is $1.25 per million tokens, more expensive than 61% of the 360 priced models we track.
What is the context window of Hy4 preview?
Hy4 preview accepts up to 1,024,000 tokens per request and can write up to 64,000 tokens in one response.
How good is Hy4 preview?
Epoch AI has not published a Capabilities Index score for Hy4 preview yet.
Is Hy4 preview open source?
Yes. Tencent publishes the weights, so it can be downloaded and self-hosted.
What inputs does Hy4 preview support?
Hy4 preview accepts text and replies in text. It is a reasoning model with high effort settings, supports tool calling.
When was Hy4 preview released?
Tencent released Hy4 preview on Aug 28, 2026.
What are the best alternatives to Hy4 preview?
The closest current models from other labs on capability, price and release date are LongCat-2.5-Preview (Meituan (LongCat), $0.75 / $2.95), Step 5 Preview (StepFun, $1.00 / $2.70), Sakana Namazu (Sakana AI, $0.95 / $4.00) and Motif 3 (Motif Technologies, $0.50 / $2.00).