SSyncDev

AI model comparison

Grok 4 1 Fast Reasoning vs Hy3 preview

Compare recorded price, context, output limits, speed, latency, capabilities, and input/output support. Every missing value stays visible, and unsourced benchmarks are excluded.

This Grok 4 1 Fast Reasoning vs Hy3 preview comparison is designed for teams choosing between two production model records, not for declaring a universal winner. Grok 4 1 Fast Reasoning by Xai via Requesty currently records 2M context, 30K maximum output, $0.20 input per 1M tokens, $0.50 output per 1M tokens. Hy3 preview by Tencent records 256K context, 64K maximum output, $0.00 input per 1M tokens, $0.00 output per 1M tokens. The tables below separate documented capabilities, commercial limits, directory measurements, and source-linked benchmark evidence so you can see where the data is complete and where independent testing is still required.

Side-by-sideSpecs and pricing, compared

Xai via Requesty

Grok 4 1 Fast Reasoning

A frontier multimodal model optimized specifically for high-performance agentic tool calling.

Context
2M
Max output
30K
Input / 1M
$0.20
Output / 1M
$0.50
Output speed
—

Accepts

  • Text input
  • Image input

Produces

  • Text output
Full model profileVendor docs ↗
VS

Tencent

Hy3 preview

Tencent Hy reasoning model for coding, instruction following, and agent tasks

Context
256K
Max output
64K
Input / 1M
$0.00
Output / 1M
$0.00
Output speed
—

Accepts

  • Text input

Produces

  • Text output
Full model profileVendor docs ↗

At a glance

Decision snapshot

This is a directional summary of the values recorded in this directory—not a universal quality verdict. Test the finalists on your own prompts before committing.

Where Grok 4 1 Fast Reasoning leads in recorded data

  • Context capacity: 2M

Where Hy3 preview leads in recorded data

  • Maximum output: 64K
  • Input price: $0.00
  • Output price: $0.00

Context capacity

Higher listed limit

Grok 4 1 Fast Reasoning:2M

Hy3 preview:256K

Grok 4 1 Fast Reasoning

Maximum output

Higher listed limit

Grok 4 1 Fast Reasoning:30K

Hy3 preview:64K

Hy3 preview

Input price

Lower recorded price

Grok 4 1 Fast Reasoning:$0.20

Hy3 preview:$0.00

Hy3 preview

Output price

Lower recorded price

Grok 4 1 Fast Reasoning:$0.50

Hy3 preview:$0.00

Hy3 preview

Output speed

Higher recorded throughput

Grok 4 1 Fast Reasoning:—

Hy3 preview:—

No complete comparison

Time to first token

Lower recorded latency

Grok 4 1 Fast Reasoning:—

Hy3 preview:—

No complete comparison

Intelligence Index

Higher directory index

Grok 4 1 Fast Reasoning:—

Hy3 preview:—

No complete comparison

Evidence

Verified shared benchmarks

A score appears only when both records include a verified source. It is not treated as a universal ranking.

These two models haven't been measured on the same benchmark yet, so there's nothing meaningful to chart. Comparing scores from different tests would tell you more about the tests than the models — the specs and pricing above are the better guide here.

Specifications

Pricing, limits and capabilities

SpecificationGrok 4 1 Fast ReasoningHy3 preview
ProviderXai via RequestyTencent
Model family—Hy
Accepted inputstext, imagetext
Produced outputstexttext
Context window2MRecorded lead256K
Max output30K64KRecorded lead
Intelligence Index——
Input price / 1M$0.20$0.00Recorded lead
Output price / 1M$0.50$0.00Recorded lead
Output speed——
Time to first token——
Reasoning modeDocumentedDocumented
Tool callingDocumentedDocumented
Image inputDocumentedNot documented
Audio inputNot documentedNot documented
Structured outputDocumentedNot documented
LicenseNot documentedOpen weights
ReleasedNov 19, 2025Apr 20, 2026

Workload guidance

Which model should you choose?

Grok 4 1 Fast Reasoning currently leads on larger context. Hy3 preview currently leads on larger maximum output, lower recorded input price, lower recorded output price. Choose according to the constraints that matter to your workload, then run the same representative prompts against both models before making a production commitment. Neither the larger number nor the lower price is automatically the better choice: prompt quality, tool reliability, modality support, rate limits, data policy, and provider implementation can change the result. Use this page to build a shortlist, confirm current terms in the linked sources, and validate quality, latency, and cost with your own traffic.

Provenance

Sources and data limits

Prices and hosted performance can change. SyncDev records source references and clearly separates documented specifications from measured values; confirm commercial terms with the provider before deployment.

Questions people ask

It compares recorded context and output limits, token prices, output speed, time to first token, Intelligence Index, modality support, tool and structured-output capabilities, release information, and only source-linked benchmarks verified on both records. Missing information is labeled rather than inferred.

Compare a different pair

Choose any two approved model records and review them with the same evidence rules.

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