Gemini 3.1 Flash Lite Preview vs Hy4 preview

Hy4 preview leads Gemini 3.1 Flash Lite Preview on coding, 44.3 to 22.7 on the Vibe Coding Index, and Gemini 3.1 Flash Lite Preview costs 1.7x less per output token ($1.50 vs $2.501 per million). Updated October 22, 2026; 14 benchmarks have a result for both.

Replace Gemini 3.1 Flash Lite Preview Replace Hy4 preview

Gemini 3.1 Flash Lite PreviewGoogle

Coding: 22.7
Overall: 36.6
Output $/M: $1.50

Hy4 previewTencent

Coding: 44.3
Overall: No data
Output $/M: $2.501

vs boards won of 14 shared, 2 tied

Gemini 3.1 Flash Lite Preview or Hy4 preview: which to pick

Pick Hy4 preview for coding: it scores 44.3 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview.

Pick Gemini 3.1 Flash Lite Preview for output tokens 1.7x cheaper ($1.50 vs $2.501 per million) and work measured by MedCode (Vals AI), where it leads.

Model AGemini 3.1 Flash Lite PreviewGoogle22.7/1003 independent benchmarks$0.18 per solved task Model BHy4 previewTencent44.3/1003 independent benchmarksNo cost per solved task

146510

Shared results: 14
Gemini 3.1 Flash Lite Preview only: 65
Hy4 preview only: 10
Like-for-like categories: 4 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

Coding
Vibe Coding Index, six public coding benchmarks
Hy4 preview
Hy4 preview scores 44.3 against 22.7.
3 benchmarks behind each score
Intelligence
AA Intelligence Index
No call
Only Gemini 3.1 Flash Lite Preview has a AA Intelligence Index result, 15.6.
Directional only
Agentic work
AA Agentic Index
No call
Only Gemini 3.1 Flash Lite Preview has a AA Agentic Index result, 1.6.
Directional only
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Flash Lite Preview has a GPQA Diamond result, 81.1%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Flash Lite Preview has a AIME result, 83.3%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Flash Lite Preview has a MMLU Pro result, 86.2%.
Directional only
Web design
Design Arena: websites
No call
Only Gemini 3.1 Flash Lite Preview has a Design Arena: websites result, 1082.
Directional only
General
Vals Index
No call
Only Hy4 preview has a Vals Index result, 53.2%.
Directional only
Long documents
Listed context window
No call
Both take 1.05M tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview $0.0010, Hy4 preview $0.0021 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Flash Lite Preview has the number, $0.18.
Directional only

At a glance

Coding index: Gemini 3.1 Flash Lite Preview 22.7 from 3 benchmarks, Hy4 preview 44.3 from 3 benchmarks.
Widest category: Coding, 44.0 points apart on average over 7 shared benchmarks.
Widest single gap: Vibe Code Bench (Vals AI): Gemini 3.1 Flash Lite Preview 0.0% against Hy4 preview 77.5%, 77.5 points apart on a 0 to 100 scale.
Output price: Gemini 3.1 Flash Lite Preview $1.50 against Hy4 preview $2.501 per million output tokens, 1.7x apart.
Context window: Both take 1.05M tokens.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
Category	Gemini 3.1 Flash Lite Preview	Hy4 preview	Ties
Coding	0	6	1 tie
Agentic work	0	4
Knowledge	1	0	1 tie
General	0	1
All shared boards	1	11	2 ties

CodingLike-for-likeSix of these boards feed the Vibe Coding Index06

Coding benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
LMArena WebDev	1257	1631	Hy4 preview
AA Coding Index	34.7	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LiveCodeBench (Vals AI)	80.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SWE-bench Verified (Vals AI)	62.8%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Terminal-Bench 4 (Vals AI)	Not measured	8.1%	Only Hy4 preview measured
Vibe Code Bench (Vals AI)	0.0%	77.5%	Hy4 preview
Code migration (Vals AI)	4.6%	47.4%	Hy4 preview
ProgramBench (Vals AI)	0.0%	0.0%	Tie
IOI (Vals AI)	Not measured	59.3%	Only Hy4 preview measured
Terminal-Bench 2.1 (Vals AI)	34.1%	55.1%	Hy4 preview
CyberBench (Vals AI)	Not measured	65.4%	Only Hy4 preview measured
ALE-Bench	797.7	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: coding	1400	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: software and IT	1413	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena WebDev: React	1245	1653	Hy4 preview
LMArena WebDev: HTML	1276	1620	Hy4 preview
LMArena WebDev: from an image	1336	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SciCode	4.6%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 21 boards here

IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared

Intelligence benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
AA Intelligence Index	15.6	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 1 board here

Agentic workLike-for-likePublic boards, shown as published, kept out of the index04

Agentic work benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
AA Agentic Index	1.6	Not measured	Only Gemini 3.1 Flash Lite Preview measured
SREBench (Vals AI)	Not measured	2.3%	Only Hy4 preview measured
Finance Agent (Vals AI)	30.0%	55.1%	Hy4 preview
Tax Agent Bench (Vals AI)	3.1%	32.6%	Hy4 preview
Legal Research Bench (Vals AI)	3.4%	45.2%	Hy4 preview
Harvey's Legal Agent Benchmark (Vals AI)	Not measured	8.8%	Only Hy4 preview measured
Excel Modeling Benchmark (Vals AI)	8.6%	58.1%	Hy4 preview
BioMysteryBench (Vals AI)	Not measured	69.3%	Only Hy4 preview measured
Terminal-Bench-Science (Vals AI)	Not measured	1.4%	Only Hy4 preview measured
Neither model has a result on the other 32 boards here

ReasoningDirectional onlyPublic boards, shown as published, kept out of the index7 boards, none shared

Reasoning benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
GPQA Diamond	81.1%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
MMMU Pro (Vals AI)	82.5%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: hard prompts	1407	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: expert	1398	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: hard prompts in English	1403	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: diagrams	1242	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: homework	1271	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 15 boards here

MathDirectional onlyPublic boards, shown as published, kept out of the index4 boards, none shared

Math benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
AIME	83.3%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
ProofBench	Not measured	75.0%	Only Hy4 preview measured
LMArena Text: math	1428	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: mathematical work	1417	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 9 boards here

KnowledgeLike-for-likePublic boards, shown as published, kept out of the index10

Knowledge benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
MMLU Pro	86.2%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LegalBench (Vals AI)	83.8%	83.8%	Tie
CaseLaw (Vals AI)	55.0%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
CorpFin (Vals AI)	59.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
TaxEval (Vals AI)	71.8%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
MortgageTax (Vals AI)	68.0%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
MedCode (Vals AI)	47.6%	43.3%	Gemini 3.1 Flash Lite Preview
LMArena Text: science	1425	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: medicine and healthcare	1428	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: legal and government	1418	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: business and finance	1389	Not measured	Only Gemini 3.1 Flash Lite Preview measured
FACTS Benchmark Suite	51.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 6 boards here

Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared

Web design benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
Design Arena: websites	1082	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: UI components	1069	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: game dev	1029	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: data viz	1045	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: 3D	1047	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: all code categories	1072	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: SVG	1052	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Design Arena: ASCII art	1167	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 1 board here

GeneralLike-for-likePublic boards, shown as published, kept out of the index01

General benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
Vals Index	Not measured	53.2%	Only Hy4 preview measured
Public Benefits Bench (Vals AI)	Not measured	68.6%	Only Hy4 preview measured
SAGE (Vals AI)	49.5%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
MedScribe (Vals AI)	63.9%	83.6%	Hy4 preview
Vals Multimodal Index	41.4%	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text	1416	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: instruction following	1377	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: creative writing	1401	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision	1240	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: English	1414	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: non-English	1410	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Chinese	1460	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: German	1430	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Japanese	1413	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Korean	1392	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: French	1424	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Spanish	1421	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Russian	1420	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: Polish	1443	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: multi-turn	1417	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: longer queries	1394	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: writing and language	1408	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Text: entertainment and media	1386	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: English	1232	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: Chinese	1278	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: reading text	1246	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: humor	1266	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: captioning	1259	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: recognizing things	1308	Not measured	Only Gemini 3.1 Flash Lite Preview measured
LMArena Vision: creative writing	1248	Not measured	Only Gemini 3.1 Flash Lite Preview measured
Neither model has a result on the other 16 boards here

Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared

Image generation benchmarks for Gemini 3.1 Flash Lite Preview and Hy4 preview
Benchmark	Gemini 3.1 Flash Lite Preview	Hy4 preview	Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Gemini 3.1 Flash Lite Preview$0.0010Fits in one request

Hy4 preview$0.0021Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Repository review

50K input + 3K output tokens

Gemini 3.1 Flash Lite Preview$0.017Fits in one request

Hy4 preview$0.049Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Agent loop

200K input + 10K output tokens

Gemini 3.1 Flash Lite Preview$0.065Fits in one request

Hy4 preview$0.192Fits in one request

Gemini 3.1 Flash Lite Preview costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Gemini 3.1 Flash Lite Preview and Hy4 preview
Specification	Google Gemini 3.1 Flash Lite Preview	Tencent Hy4 preview
Maker	Google	Tencent
Weights	No public weights listed	Open weights
Released	March 3, 2026	August 28, 2026
Context window	1.05M	1.05M
Input $/Mtok	$0.25	$0.834
Output $/Mtok	$1.50	$2.501
Coding index	22.7	44.3
Independent measurements behind it	3	3
Cost per solved task	$0.18	Not computable
Source	OpenRouter listing	OpenRouter listing

Questions

Is Gemini 3.1 Flash Lite Preview better than Hy4 preview for coding?

Pick Hy4 preview for coding: it scores 44.3 on the Vibe Coding Index against 22.7 for Gemini 3.1 Flash Lite Preview. Pick Gemini 3.1 Flash Lite Preview for output tokens 1.7x cheaper ($1.50 vs $2.501 per million) and work measured by MedCode (Vals AI), where it leads.

Which is cheaper, Gemini 3.1 Flash Lite Preview or Hy4 preview?

Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Hy4 preview costs $0.834 and $2.501. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.

Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Hy4 preview?

Neither: both take 1.05M tokens.

How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Hy4 preview comparison based on?

14 benchmarks have a result for both models as of October 22, 2026. Gemini 3.1 Flash Lite Preview's coding index rests on 3 independent benchmarks and Hy4 preview's on 3. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemini-3-1-flash-lite-preview-vs-tencent-hy4-preview">LLMBenchmark.ai, Gemini 3.1 Flash Lite Preview vs Hy4 preview</a></p>

Gemini 3.1 Flash Lite Preview or Hy4 preview: which to pick

Which one for your work

Coding

Intelligence

Agentic work

Reasoning

Math

Knowledge

Web design

General

Long documents

Everyday cost

Cost per solved task

At a glance

Benchmark by benchmark

What each workload costs

Chat turn

Repository review

Agent loop

Specification differences

Questions

Compare next