Quick Profile

Hy4 preview

Hy4 preview is a balanced model with ultra-long context support, suited to agent workflows and advanced reasoning for enterprise teams.

Try Hy4 preview with your team

Last reviewed: 2026-09-02

Hy4 preview

Tencent

Preview

Context Window

1,048,576

Input / 1M

$1.25

Output / 1M

$3.75

What can you do with Hy4 preview?

Practical ways teams can use Hy4 preview inside governed AI workflows.

Code and debug with Hy4 preview

Draft features, explain unfamiliar code, generate tests, review pull requests, and reason through implementation tradeoffs with Hy4 preview.

Build workflow automations with Hy4 preview

Plan agent steps, transform data between tools, create structured outputs, and support repeatable operations with Hy4 preview.

Improve security reviews with Hy4 preview

Classify risk, draft incident summaries, review access patterns, and create remediation action lists with Hy4 preview.

Summarize long documents with Hy4 preview

Condense contracts, policies, technical specs, RFPs, and research reports into decision-ready summaries with Hy4 preview.

Create presentations with Hy4 preview

Turn notes, research, and meeting outcomes into structured slide outlines, speaker notes, and executive narratives with Hy4 preview.

Analyze spreadsheets with Hy4 preview

Interpret CSV exports, explain variance, generate formulas, and identify operational or financial patterns with Hy4 preview.

Draft customer communications with Hy4 preview

Create support replies, sales follow-ups, onboarding emails, renewal messages, and account updates with Hy4 preview.

Prepare legal and compliance reviews with Hy4 preview

Extract obligations, flag risky clauses, compare policy language, and prepare review checklists with Hy4 preview.

Research competitors and markets with Hy4 preview

Synthesize market signals, positioning, pricing context, customer segments, and competitive risks with Hy4 preview.

Create knowledge-base answers with Hy4 preview

Answer employee questions from internal policies, product docs, training material, and operating procedures with Hy4 preview.

Support finance planning with Hy4 preview

Draft budget narratives, explain spend drivers, create forecast assumptions, and summarize vendor costs with Hy4 preview.

Generate product and marketing copy with Hy4 preview

Create landing-page drafts, positioning variants, launch messaging, ad concepts, and campaign briefs with Hy4 preview.

Why this model

Hy4 preview is available in Remova as an ultra-long context option with $1.25 per 1M tokens input pricing, $3.75 per 1M tokens output pricing, and text input to text output support.

Hy4 preview offers ultra-long context capacity for enterprise prompts and documents.
Current Remova pricing band is balanced: $1.25 per 1M tokens input and $3.75 per 1M tokens output.
Best-fit workloads include: Agent workflows, Advanced reasoning, Code generation.
Keep role-based access in place before broad rollout.

At a glance

Model ID: tencent/hy4-preview
Context Window: 1,048,576 tokens
Modality: Text input to text output
Input Modalities: Text
Output Modalities: Text
Input Price: $1.25 per 1M tokens
Output Price: $3.75 per 1M tokens
Provider: Tencent
Listing Date: 2026-08-28

Strengths

Hy4 preview is suited for agent workflows.
Supports ultra-long context for multi-step prompts and larger working sets.
Pricing profile is balanced, enabling predictable workload routing decisions.
Can be paired with policy guardrails for safer deployment at scale.

Tradeoffs

Operational drift can appear over time without recurring quality evaluations.
Very large context windows can increase token spend variance without strict limits.
Balanced-price tiers still need policy-based routing to protect monthly budgets.
Text-only modality can limit workflows that rely on image, audio, or document interpretation.

Best for

Hy4 preview for tool-driven automation with governance checkpoints.
Hy4 preview for complex analysis and long-form decision support.
Hy4 preview for software delivery workflows with policy-enforced prompts.
Hy4 preview for productivity use cases that still need review and escalation paths.

Rollout checklist

Define where Hy4 preview is default vs. fallback in your routing policy.
Enable role-based access and policy checks before opening access broadly.
Set spend guardrails by team and monitor weekly token consumption.
Start with one workflow, then expand after you verify quality and spend.
Re-run quality and cost benchmarks monthly as newer releases appear.

Related models

Explore adjacent model profiles for routing and benchmarking decisions.

Free Resource

Where Should Your Team Start with AI?

Tell us your industry and team size. We'll tell you which AI use cases will save the most time with the least setup.

You get

A shortlist of AI use cases ranked by impact and effort for your situation.

Tuning notes

include_reasoning

Enable only where reasoning traces add operational value or review quality.

max_completion_tokens

Use this parameter only with tested defaults in production workflows.

max_tokens

Set completion limits to avoid unpredictable long-output spend.

reasoning

Increase reasoning effort only for complex tasks that justify extra cost.

Free Assessment

What Could Go Wrong?

5 questions about how your company uses AI today. We'll show you the risks most companies miss until it's too late.

You get

A risk breakdown with the 3 things you should fix first.

Knowledge Hub

Hy4 preview FAQs

Choose Hy4 preview when the workload aligns with agent workflows, advanced reasoning, code generation and quality targets justify its pricing profile.

It depends on workload mix. Most organizations use routing policies so routine traffic stays on lower-cost tiers.

Validate quality on real internal prompts, token efficiency, latency, and policy compliance behavior.

Deploy This Model With Governance

Use policy controls, role-based access, and budget guardrails before enabling advanced model tiers at scale.

Try Hy4 preview with your team