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AI Atlas
ModelActive

Hy4 preview

Tencent

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...

quality50

Updated 1 h ago · first seen 11 Sept 2026

model_01M294WVPRVK9PVYGKXRK6Y510

Context
1.05M tokens
T2 · 1 h ago
Released
28 Aug 2026
T2 · 1 h ago

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history · Supported parameters

1 claims · 1 propertiesShow all properties

Supported parameterssupported_parameters1

Claim history for Supported parameters
ValueValid from → toStatusSourceConfidenceExtractor
include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, stop, structured_outputs, temperature, tool_choice, toolscurrentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →