Tencent

Hy4 preview

tencent/hy4-preview
Model weightsReleased Aug 28, 2026Apache 2.0
ThinkingToolsopen weights

Tencent: Hy4 preview is a mixture-of-experts model from Tencent, with 49B active parameters out of 770B total. It is designed for coding agents, complex tool-use workflows, and productivity tasks that...

Cost / 1M tokens

Low usage

$0.751

input

$0.038

cached input

$2.25

output

Context Window

1M

Up to 64K max output

Architecture

770B MoE

text → text

Quickstart & API

tencent/hy4-preview
Open the model picker in ChatOSS Desktop (Code, Kanban, or Chat) and select or paste this model ID.

Best for & Strengths

Key Strengths

Open weightsExtended reasoningTool & agent calling1M+ token context

Recommended Workloads in ChatOSS

  • Coding agents
  • Complex reasoning & debugging
  • Open-source AI workflows
Available in ChatOSS Code, Kanban Orchestrate, and Chat modes via Plus, Max, or BYOK.

Active Provider Endpoints (8)

Upstream inference providers serving Hy4 preview, with per-provider pricing, context limits, quantization, and 24-hour uptime.

ProviderInput / 1MOutput / 1MCache Read / 1MContextMax OutputQuantizationUptime (24h)
Tencentcache
tencent/fp8
$0.751$2.25$0.0381M64Kfp8100.0%
DeepInfracache
deepinfra/fp4
$0.792$2.38$0.041M131Kfp499.7%
Io Netcache
io-net/fp8
$0.834$2.50$0.042262K66Kfp898.4%
GMICloudcache
gmicloud/bf16
$0.834$2.50$0.042262K236Kbf1690.5%
AtlasCloudcache
atlas-cloud/fp8
$0.834$2.50$0.0421M64Kfp8100.0%
Coherecache
cohere
$0.834$2.50$0.042262K131K—99.5%
Novitacache
novita/fp8
$0.834$2.50$0.0421M64Kfp8100.0%
SiliconFlowcache
siliconflow/fp8
$0.834$2.50$0.0421M262Kfp899.6%

Supported API Parameters

Parameters accepted by this model when called through ChatOSS or OpenRouter.

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_completion_tokensmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

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