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Gemini 4 Hydrogen vs GLM 5.3 Flash

Gemini 4 Hydrogen leads GLM 5.3 Flash on coding, 77.9 to 56.2 on the Vibe Coding Index, and GLM 5.3 Flash costs 15.0x less per output token ($0.50 vs $7.50 per million). Updated November 14, 2026; 50 benchmarks have a result for both.

Replace Gemini 4 Hydrogen Replace GLM 5.3 Flash
Gemini 4 HydrogenGoogle
Coding
77.9
Overall
77.1
Output $/M
$7.50
50
GLM 5.3 FlashZ.ai
Coding
56.2
Overall
61.8
Output $/M
$0.50
0
vs boards won of 50 shared

Gemini 4 Hydrogen or GLM 5.3 Flash: which to pick

Pick Gemini 4 Hydrogen for coding: it scores 77.9 on the Vibe Coding Index against 56.2 for GLM 5.3 Flash, though on 4 benchmarks against 6.

Pick GLM 5.3 Flash for output tokens 15.0x cheaper ($0.50 vs $7.50 per million).

Model AGemini 4 HydrogenGoogle77.9/1004 independent benchmarksNo cost per solved taskModel BGLM 5.3 FlashZ.ai56.2/1006 independent benchmarks$0.02 per solved task
Shared results
50
Gemini 4 Hydrogen only
0
GLM 5.3 Flash only
65
Like-for-like categories
7 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.

At a glance

Coding index
Gemini 4 Hydrogen 77.9 from 4 benchmarks, GLM 5.3 Flash 56.2 from 6 benchmarks.
Widest category
Reasoning, 18.3 points apart on average over 6 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Gemini 4 Hydrogen 87.8% against GLM 5.3 Flash 30.8%, 57.0 points apart on a 0 to 100 scale.
Output price
Gemini 4 Hydrogen $7.50 against GLM 5.3 Flash $0.50 per million output tokens, 15.0x 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
CategoryGemini 4 HydrogenBarsGLM 5.3 FlashTies
Coding110
Agentic work60
Reasoning60
Math20
Knowledge50
Web design50
General150
All shared boards500
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
Coding benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
LiveBench coding78.5%70.9%Gemini 4 Hydrogen
LMArena WebDev17041609Gemini 4 Hydrogen
AA Coding IndexNot measured71.5Only GLM 5.3 Flash measured
LiveCodeBench (Vals AI)Not measured80.5%Only GLM 5.3 Flash measured
SWE-bench Verified (Vals AI)Not measured92.0%Only GLM 5.3 Flash measured
Terminal-Bench 4 (Vals AI)54.0%37.4%Gemini 4 Hydrogen
Vibe Code Bench (Vals AI)87.8%30.8%Gemini 4 Hydrogen
Code migration (Vals AI)Not measured20.5%Only GLM 5.3 Flash measured
ProgramBench (Vals AI)Not measured0.0%Only GLM 5.3 Flash measured
IOI (Vals AI)Not measured52.5%Only GLM 5.3 Flash measured
Terminal-Bench 2.1 (Vals AI)Not measured62.9%Only GLM 5.3 Flash measured
Vibe Code Bench 1-100 (Vals AI)Not measured16.0%Only GLM 5.3 Flash measured
SkillsBench (Vals AI)Not measured40.2%Only GLM 5.3 Flash measured
CyberBench (Vals AI)Not measured67.9%Only GLM 5.3 Flash measured
SciCodeNot measured51.6%Only GLM 5.3 Flash measured
Terminal-Bench 4.0 (Artificial Analysis run)54.0%32.8%Gemini 4 Hydrogen
FrontierCode 2.039.0%17.6%Gemini 4 Hydrogen
FrontierCodeNot measured31.8%Only GLM 5.3 Flash measured
FrontierSWENot measured18.1%Only GLM 5.3 Flash measured
ALE-BenchNot measured303.6Only GLM 5.3 Flash measured
LMArena Text: coding15161509Gemini 4 Hydrogen
LMArena Text: software and IT15131501Gemini 4 Hydrogen
LMArena WebDev: React17241628Gemini 4 Hydrogen
LMArena WebDev: HTML17431576Gemini 4 Hydrogen
LMArena WebDev: from an imageNot measured1582Only GLM 5.3 Flash measured
GameBench 2Not measured60.8Only GLM 5.3 Flash measured
Terminal-Bench 4.0Not measured36.7%Only GLM 5.3 Flash measured
CursorBench 4.057.8%36.8%Gemini 4 Hydrogen
Neither model has a result on the other 24 boards here
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
Intelligence benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
AA Intelligence IndexNot measured27.8Only GLM 5.3 Flash measured
Epoch Capabilities IndexNot measured153.8Only GLM 5.3 Flash measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index60
Agentic work benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
AA Agentic IndexNot measured50.9Only GLM 5.3 Flash measured
LiveBench research86.8%73.9%Gemini 4 Hydrogen
LiveBench browser77.1%59.8%Gemini 4 Hydrogen
LiveBench long agentic61.8%20.7%Gemini 4 Hydrogen
SREBench (Vals AI)Not measured0.8%Only GLM 5.3 Flash measured
Finance Agent (Vals AI)Not measured57.9%Only GLM 5.3 Flash measured
Tax Agent Bench (Vals AI)52.3%31.6%Gemini 4 Hydrogen
Legal Research Bench (Vals AI)53.8%45.2%Gemini 4 Hydrogen
Harvey's Legal Agent Benchmark (Vals AI)11.3%10.4%Gemini 4 Hydrogen
Excel Modeling Benchmark (Vals AI)Not measured55.9%Only GLM 5.3 Flash measured
Terminal-Bench-Science (Vals AI)Not measured2.9%Only GLM 5.3 Flash measured
APEX-AgentsNot measured52.8%Only GLM 5.3 Flash measured
PostTrainBenchNot measured36.8%Only GLM 5.3 Flash measured
Toolathlon-VerifiedNot measured78.4%Only GLM 5.3 Flash measured
Neither model has a result on the other 30 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index60
Reasoning benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
GPQA DiamondNot measured86.4%Only GLM 5.3 Flash measured
LiveBench reasoning88.6%77.6%Gemini 4 Hydrogen
MMMU Pro (Vals AI)Not measured86.0%Only GLM 5.3 Flash measured
GPQA Diamond (Artificial Analysis run)Not measured91.2%Only GLM 5.3 Flash measured
Humanity's Last Exam (Artificial Analysis run)Not measured39.9%Only GLM 5.3 Flash measured
HLE-Diamond (Artificial Analysis run)58.8%18.2%Gemini 4 Hydrogen
CritPt v2, hard subset (Artificial Analysis run)66.0%24.5%Gemini 4 Hydrogen
GPQA Diamond (Epoch AI run)Not measured90.2%Only GLM 5.3 Flash measured
ARC-AGINot measured91.0%Only GLM 5.3 Flash measured
ARC-AGI-2Not measured65.8%Only GLM 5.3 Flash measured
Chess puzzlesNot measured21.0%Only GLM 5.3 Flash measured
Mystery game puzzlesNot measured8.0%Only GLM 5.3 Flash measured
LMArena Text: hard prompts15201490Gemini 4 Hydrogen
LMArena Text: expert15581511Gemini 4 Hydrogen
LMArena Text: hard prompts in English15141492Gemini 4 Hydrogen
LMArena Vision: diagramsNot measured1321Only GLM 5.3 Flash measured
LMArena Vision: homeworkNot measured1323Only GLM 5.3 Flash measured
Neither model has a result on the other 9 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index20
Math benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
OTIS Mock AIMENot measured93.9%Only GLM 5.3 Flash measured
FrontierMath, tiers 1 to 3Not measured55.8%Only GLM 5.3 Flash measured
FrontierMath, tier 4Not measured17.1%Only GLM 5.3 Flash measured
ProofBenchNot measured21.0%Only GLM 5.3 Flash measured
LMArena Text: math15071503Gemini 4 Hydrogen
LMArena Text: mathematical work15341491Gemini 4 Hydrogen
Neither model has a result on the other 8 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
MMLU ProNot measured86.1%Only GLM 5.3 Flash measured
LegalBench (Vals AI)Not measured83.9%Only GLM 5.3 Flash measured
TaxEval (Vals AI)Not measured75.6%Only GLM 5.3 Flash measured
AA-Omniscience46.30.7Gemini 4 Hydrogen
LMArena Text: science15191485Gemini 4 Hydrogen
LMArena Text: medicine and healthcare14881480Gemini 4 Hydrogen
LMArena Text: legal and government15321478Gemini 4 Hydrogen
LMArena Text: business and finance14861461Gemini 4 Hydrogen
Neither model has a result on the other 13 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index50
Web design benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
Design Arena: websites13201257Gemini 4 Hydrogen
Design Arena: UI componentsNot measured1296Only GLM 5.3 Flash measured
Design Arena: game dev13691266Gemini 4 Hydrogen
Design Arena: data vizNot measured1258Only GLM 5.3 Flash measured
Design Arena: 3D14151292Gemini 4 Hydrogen
Design Arena: all code categories13331267Gemini 4 Hydrogen
Design Arena: SVGNot measured1271Only GLM 5.3 Flash measured
Design Arena: ASCII artNot measured1269Only GLM 5.3 Flash measured
LiveBench design77.3%73.7%Gemini 4 Hydrogen
GeneralLike-for-likePublic boards, shown as published, kept out of the index150
General benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
Vals Index68.5%50.9%Gemini 4 Hydrogen
LiveBench data analysis83.2%76.4%Gemini 4 Hydrogen
SAGE (Vals AI)Not measured89.3%Only GLM 5.3 Flash measured
MedScribe (Vals AI)Not measured88.9%Only GLM 5.3 Flash measured
Long context reasoning (AA-LCR)Not measured80.0%Only GLM 5.3 Flash measured
GDPval-AANot measured1648Only GLM 5.3 Flash measured
Surface Evolver BenchNot measured52.5%Only GLM 5.3 Flash measured
LMArena Text15021472Gemini 4 Hydrogen
LMArena Text: instruction following15191480Gemini 4 Hydrogen
LMArena Text: creative writing15091442Gemini 4 Hydrogen
LMArena VisionNot measured1295Only GLM 5.3 Flash measured
LMArena Text: English14991477Gemini 4 Hydrogen
LMArena Text: non-English14951462Gemini 4 Hydrogen
LMArena Text: Chinese16311528Gemini 4 Hydrogen
LMArena Text: GermanNot measured1452Only GLM 5.3 Flash measured
LMArena Text: JapaneseNot measured1453Only GLM 5.3 Flash measured
LMArena Text: KoreanNot measured1427Only GLM 5.3 Flash measured
LMArena Text: French15121489Gemini 4 Hydrogen
LMArena Text: Spanish14941476Gemini 4 Hydrogen
LMArena Text: Russian14921467Gemini 4 Hydrogen
LMArena Text: PolishNot measured1448Only GLM 5.3 Flash measured
LMArena Text: multi-turn14851471Gemini 4 Hydrogen
LMArena Text: longer queries15241481Gemini 4 Hydrogen
LMArena Text: writing and language15001457Gemini 4 Hydrogen
LMArena Text: entertainment and media15031442Gemini 4 Hydrogen
LMArena Vision: EnglishNot measured1299Only GLM 5.3 Flash measured
LMArena Vision: ChineseNot measured1359Only GLM 5.3 Flash measured
LMArena Vision: reading textNot measured1303Only GLM 5.3 Flash measured
LMArena Vision: humorNot measured1291Only GLM 5.3 Flash measured
LMArena Vision: recognizing thingsNot measured1279Only GLM 5.3 Flash measured
LMArena Vision: creative writingNot measured1272Only GLM 5.3 Flash measured
Neither model has a result on the other 18 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemini 4 Hydrogen and GLM 5.3 Flash
BenchmarkGemini 4 HydrogenGLM 5.3 FlashLeader
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 4 Hydrogen$0.0053Fits in one request
GLM 5.3 Flash$0.0004Fits in one request

GLM 5.3 Flash costs less

Repository review

50K input + 3K output tokens

Gemini 4 Hydrogen$0.098Fits in one request
GLM 5.3 Flash$0.0090Fits in one request

GLM 5.3 Flash costs less

Agent loop

200K input + 10K output tokens

Gemini 4 Hydrogen$0.375Fits in one request
GLM 5.3 Flash$0.035Fits in one request

GLM 5.3 Flash 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 4 Hydrogen and GLM 5.3 Flash
SpecificationGoogle Gemini 4 HydrogenZ.ai GLM 5.3 Flash
MakerGoogleZ.ai
WeightsNo public weights listedOpen weights
ReleasedNovember 12, 2026August 26, 2026
Context window1.05M1.05M
Input $/Mtok$1.50$0.15
Output $/Mtok$7.50$0.50
Coding index77.956.2
Independent measurements behind it46
Cost per solved taskNot computable$0.02
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemini 4 Hydrogen better than GLM 5.3 Flash for coding?

Pick Gemini 4 Hydrogen for coding: it scores 77.9 on the Vibe Coding Index against 56.2 for GLM 5.3 Flash, though on 4 benchmarks against 6. Pick GLM 5.3 Flash for output tokens 15.0x cheaper ($0.50 vs $7.50 per million).

Which is cheaper, Gemini 4 Hydrogen or GLM 5.3 Flash?

Gemini 4 Hydrogen costs $1.50 per million input tokens and $7.50 per million output tokens; GLM 5.3 Flash costs $0.15 and $0.50. Cost per solved task is known for GLM 5.3 Flash only.

Which has the bigger context window, Gemini 4 Hydrogen or GLM 5.3 Flash?

Neither: both take 1.05M tokens.

How many benchmarks is the Gemini 4 Hydrogen vs GLM 5.3 Flash comparison based on?

50 benchmarks have a result for both models as of November 14, 2026. Gemini 4 Hydrogen's coding index rests on 4 independent benchmarks and GLM 5.3 Flash's on 6. 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-4-hydrogen-vs-glm-5-3-flash">LLMBenchmark.ai, Gemini 4 Hydrogen vs GLM 5.3 Flash</a></p>