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GLM 4.5 Air vs GPT-4.1 Mini

GLM 4.5 Air leads GPT-4.1 Mini on the Artificial Analysis Intelligence Index, 11.1 to 10.2, and GLM 4.5 Air costs 1.5x less per output token ($1.10 vs $1.60 per million). Updated October 22, 2026; 46 benchmarks have a result for both.

Replace GLM 4.5 Air Replace GPT-4.1 Mini
GLM 4.5 AirZ.ai
Coding
No data
Overall
No data
Output $/M
$1.10
43
GPT-4.1 MiniOpenAI
Coding
No data
Overall
31.9
Output $/M
$1.60
3
vs boards won of 46 shared

GLM 4.5 Air or GPT-4.1 Mini: which to pick

Neither model has a coding score yet, so the two cannot be ranked on coding.

Pick GLM 4.5 Air for output tokens 1.5x cheaper ($1.10 vs $1.60 per million) and work measured by τ²-Bench Telecom or Kagi LLM Benchmark, where it leads.

Model AGLM 4.5 AirZ.aiNot benchmarkedNo coding benchmarkNo cost per solved taskModel BGPT-4.1 MiniOpenAINot benchmarkedNo coding benchmark$1.818 per solved task
Shared results
46
GLM 4.5 Air only
2
GPT-4.1 Mini only
40
Like-for-like categories
8 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
GLM 4.5 Air not benchmarked, GPT-4.1 Mini not benchmarked.
Widest category
Math, 21.4 points apart on average over 4 shared benchmarks.
Widest single gap
Design Arena: 3D: GLM 4.5 Air 1122 against GPT-4.1 Mini 836, 35.8 points apart on a 0 to 100 scale.
Output price
GLM 4.5 Air $1.10 against GPT-4.1 Mini $1.60 per million output tokens, 1.5x apart.
Context window
GLM 4.5 Air takes 131K tokens, GPT-4.1 Mini 1.05M.

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
CategoryGLM 4.5 AirBarsGPT-4.1 MiniTies
Coding40
Intelligence10
Agentic work01
Reasoning51
Math40
Knowledge50
Web design60
General181
All shared boards433
CodingLike-for-likeSix of these boards feed the Vibe Coding Index40
Coding benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
Aider polyglotNot measured32.4%Only GPT-4.1 Mini measured
SWE-bench VerifiedNot measured23.9%Only GPT-4.1 Mini measured
AA Coding IndexNot measured20.2Only GPT-4.1 Mini measured
LiveCodeBench (Vals AI)Not measured58.2%Only GPT-4.1 Mini measured
LiveCodeBench (Artificial Analysis run)68.4%48.3%GLM 4.5 Air
Terminal-Bench Hard (Artificial Analysis run)20.5%7.6%GLM 4.5 Air
GSO-Bench2.9%Not measuredOnly GLM 4.5 Air measured
WeirdMLNot measured37.6%Only GPT-4.1 Mini measured
LMArena Text: coding13971367GLM 4.5 Air
LMArena Text: software and IT14011360GLM 4.5 Air
Neither model has a result on the other 29 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
AA Intelligence Index11.110.2GLM 4.5 Air
Epoch Capabilities IndexNot measured134.9Only GPT-4.1 Mini measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
τ²-Bench Telecom46.5%52.9%GPT-4.1 Mini
Berkeley Function Calling Leaderboard (BFCL)Not measured50.4%Only GPT-4.1 Mini measured
Neither model has a result on the other 39 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index51
Reasoning benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
GPQA DiamondNot measured67.9%Only GPT-4.1 Mini measured
MMMU Pro (Vals AI)Not measured70.5%Only GPT-4.1 Mini measured
GPQA Diamond (Artificial Analysis run)73.3%66.4%GLM 4.5 Air
Humanity's Last Exam (Artificial Analysis run)7.0%5.0%GLM 4.5 Air
GPQA Diamond (Epoch AI run)Not measured65.8%Only GPT-4.1 Mini measured
ARC-AGINot measured3.5%Only GPT-4.1 Mini measured
ARC-AGI-2Not measured0.0%Only GPT-4.1 Mini measured
Chess puzzlesNot measured1.0%Only GPT-4.1 Mini measured
Mystery game puzzlesNot measured7.0%Only GPT-4.1 Mini measured
LMArena Text: hard prompts13791349GLM 4.5 Air
LMArena Text: expert13701338GLM 4.5 Air
LMArena Text: hard prompts in English13881362GLM 4.5 Air
LMArena Vision: diagramsNot measured1182Only GPT-4.1 Mini measured
LMArena Vision: homeworkNot measured1214Only GPT-4.1 Mini measured
Kagi LLM Benchmark43.0%48.6%GPT-4.1 Mini
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
AIMENot measured49.4%Only GPT-4.1 Mini measured
MATH 500 (Vals AI)Not measured88.0%Only GPT-4.1 Mini measured
MGSM (Vals AI)Not measured87.8%Only GPT-4.1 Mini measured
AA Math Index80.746.3GLM 4.5 Air
AIME 2025 (Artificial Analysis run)80.7%46.3%GLM 4.5 Air
OTIS Mock AIMENot measured44.7%Only GPT-4.1 Mini measured
FrontierMath, tiers 1 to 3Not measured6.7%Only GPT-4.1 Mini measured
MATH level 5Not measured87.3%Only GPT-4.1 Mini measured
LMArena Text: math13961343GLM 4.5 Air
LMArena Text: mathematical work13961347GLM 4.5 Air
Neither model has a result on the other 3 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
Knowledge benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
MMLU ProNot measured77.2%Only GPT-4.1 Mini measured
LegalBench (Vals AI)Not measured78.0%Only GPT-4.1 Mini measured
CorpFin (Vals AI)Not measured57.9%Only GPT-4.1 Mini measured
TaxEval (Vals AI)Not measured71.9%Only GPT-4.1 Mini measured
MortgageTax (Vals AI)Not measured65.5%Only GPT-4.1 Mini measured
MedQA (Vals AI)Not measured84.6%Only GPT-4.1 Mini measured
MMLU Pro (Artificial Analysis run)81.5%78.1%GLM 4.5 Air
SimpleQA VerifiedNot measured12.7%Only GPT-4.1 Mini measured
LMArena Text: science14071328GLM 4.5 Air
LMArena Text: medicine and healthcare14021324GLM 4.5 Air
LMArena Text: legal and government13821343GLM 4.5 Air
LMArena Text: business and finance13711322GLM 4.5 Air
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index60
Web design benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
Design Arena: websites1146997GLM 4.5 Air
Design Arena: UI components1120958GLM 4.5 Air
Design Arena: game dev10941070GLM 4.5 Air
Design Arena: data viz11861034GLM 4.5 Air
Design Arena: 3D1122836GLM 4.5 Air
Design Arena: all code categories1137993GLM 4.5 Air
Design Arena: SVG1071Not measuredOnly GLM 4.5 Air measured
Neither model has a result on the other 2 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index181
General benchmarks for GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
IFBench37.6%38.3%GPT-4.1 Mini
Long context reasoning (AA-LCR)46.7%44.0%GLM 4.5 Air
DTBenchNot measured68.8%Only GPT-4.1 Mini measured
LMCANot measured21.1%Only GPT-4.1 Mini measured
Fiction.LiveBenchNot measured44.4%Only GPT-4.1 Mini measured
LMArena Text13841341GLM 4.5 Air
LMArena Text: instruction following13541333GLM 4.5 Air
LMArena Text: creative writing13431299GLM 4.5 Air
LMArena VisionNot measured1181Only GPT-4.1 Mini measured
LMArena Text: English13971356GLM 4.5 Air
LMArena Text: non-English13661318GLM 4.5 Air
LMArena Text: Chinese14261329GLM 4.5 Air
LMArena Text: German13771350GLM 4.5 Air
LMArena Text: Japanese13481290GLM 4.5 Air
LMArena Text: Korean13081298GLM 4.5 Air
LMArena Text: French14001358GLM 4.5 Air
LMArena Text: Spanish13851319GLM 4.5 Air
LMArena Text: Russian13731324GLM 4.5 Air
LMArena Text: Polish13681326GLM 4.5 Air
LMArena Text: multi-turn13711354GLM 4.5 Air
LMArena Text: longer queries13661344GLM 4.5 Air
LMArena Text: writing and language13541319GLM 4.5 Air
LMArena Text: entertainment and media13391300GLM 4.5 Air
LMArena Vision: EnglishNot measured1191Only GPT-4.1 Mini measured
LMArena Vision: ChineseNot measured1186Only GPT-4.1 Mini measured
LMArena Vision: reading textNot measured1188Only GPT-4.1 Mini measured
LMArena Vision: humorNot measured1182Only GPT-4.1 Mini measured
LMArena Vision: captioningNot measured1174Only GPT-4.1 Mini measured
LMArena Vision: recognizing thingsNot measured1187Only GPT-4.1 Mini measured
LMArena Vision: creative writingNot measured1182Only GPT-4.1 Mini 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 GLM 4.5 Air and GPT-4.1 Mini
BenchmarkGLM 4.5 AirGPT-4.1 MiniLeader
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

GLM 4.5 Air$0.0008Fits in one request
GPT-4.1 Mini$0.0012Fits in one request

GLM 4.5 Air costs less

Repository review

50K input + 3K output tokens

GLM 4.5 Air$0.013Fits in one request
GPT-4.1 Mini$0.025Fits in one request

GLM 4.5 Air costs less

Agent loop

200K input + 10K output tokens

GLM 4.5 Air$0.051Exceeds the context window
GPT-4.1 Mini$0.096Fits in one request

GLM 4.5 Air 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 GLM 4.5 Air and GPT-4.1 Mini
SpecificationZ.ai GLM 4.5 AirOpenAI GPT-4.1 Mini
MakerZ.aiOpenAI
WeightsOpen weightsNo public weights listed
ReleasedJuly 25, 2025April 14, 2025
Context window131K1.05M
Input $/Mtok$0.20$0.40
Output $/Mtok$1.10$1.60
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it00
Cost per solved taskNot computable$1.818
SourceOpenRouter listingOpenRouter listing

Questions

Is GLM 4.5 Air better than GPT-4.1 Mini for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. Pick GLM 4.5 Air for output tokens 1.5x cheaper ($1.10 vs $1.60 per million) and work measured by τ²-Bench Telecom or Kagi LLM Benchmark, where it leads.

Which is cheaper, GLM 4.5 Air or GPT-4.1 Mini?

GLM 4.5 Air costs $0.20 per million input tokens and $1.10 per million output tokens; GPT-4.1 Mini costs $0.40 and $1.60. Cost per solved task is known for GPT-4.1 Mini only.

Which has the bigger context window, GLM 4.5 Air or GPT-4.1 Mini?

GPT-4.1 Mini, with 1.05M tokens against 131K.

How many benchmarks is the GLM 4.5 Air vs GPT-4.1 Mini comparison based on?

46 benchmarks have a result for both models as of October 22, 2026. GLM 4.5 Air's coding index rests on 0 independent benchmarks and GPT-4.1 Mini's on 0. Where only one model has a result, the page says so instead of naming a winner.

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