Noometry

Model comparison

GPT-4.1 mini vs GPT-5.3 Chat

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 33.6 on the Noometry Index. GPT-4.1 mini costs 6.9× less per token, which makes it the better buy when GPT-5.3 Chat's lead doesn't matter for your workload.

Last verified . 18 shared benchmarks.

GPT-4.1 mini OpenAI

33.6

Rank #240 Confirmed

GPT-5.3 Chat OpenAI

42.8

Rank #109 Confirmed

Summary

  • They share 18 benchmarks with published results for both. GPT-4.1 mini scores higher in 1 category and GPT-5.3 Chat in 7 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where GPT-5.3 Chat leads 28.5 to 10.8.
  • GPT-4.1 mini is cheaper at $0.40 / $1.60 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Chat.
  • GPT-4.1 mini accepts more context: 1.05M tokens versus 128K.

Side by side

GPT-4.1 miniGPT-5.3 Chat
ProviderOpenAIOpenAI
Noometry Index33.642.8
Released2025-04-142026-03-03
WeightsProprietaryProprietary
Context window1.05M128K
Max output33K16K
Input $ / M tokens$0.40$1.75
Output $ / M tokens$1.60$14
Results tracked4718

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Category by category

Coding GPT-5.3 Chat leads

GPT-4.1 mini: 30.6 (#293), GPT-5.3 Chat: 41.4 (#124)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Coding13671408
SWE-bench Verified (bash only)23.9%—
Aider Polyglot32.4%—
SciCode40.4%—
WeirdML37.6%—
BigCodeBench Instruct48.9%—
CadEval16%—

Agentic & Tool Use Not comparable

GPT-4.1 mini: 33.3 (#55), GPT-5.3 Chat: —

BenchmarkGPT-4.1 miniGPT-5.3 Chat
Berkeley Function Calling Leaderboard50.5%—

Reasoning GPT-5.3 Chat leads

GPT-4.1 mini: 10.8 (#340), GPT-5.3 Chat: 28.5 (#102)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Hard Prompts13491399
ARC-AGI-20%—
Kagi LLM Benchmark48.6%—
ARC-AGI-13.5%—
CritPt0%—
Chess Puzzles7%—
Mystery Game Puzzles7%—
DTBench68.8%—
LMCA21.1%—
Epoch Capabilities Index135.01—

Math GPT-5.3 Chat leads

GPT-4.1 mini: 24.1 (#270), GPT-5.3 Chat: 38.2 (#142)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Math13431389
FrontierMath (Tiers 1-3)6.7%—
OTIS Mock AIME 2024-202544.7%—
Omni-MATH49.1%—
MATH Level 587.3%—
FrontierMath (Feb 2025 set)4.5%—

Knowledge GPT-5.3 Chat leads

GPT-4.1 mini: 34.7 (#194), GPT-5.3 Chat: 38.8 (#140)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Expert13381397
GPQA Diamond65.8%—
SimpleQA Verified12.7%—
MMLU-Pro78.3%—
GPQA (HELM)61.4%—

Multimodal Not comparable

GPT-4.1 mini: 35.8 (#82), GPT-5.3 Chat: —

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Vision1181—

Multilingual GPT-5.3 Chat leads

GPT-4.1 mini: 45.7 (#166), GPT-5.3 Chat: 50.3 (#124)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Non-English13181382
LMArena Chinese13291432
LMArena French13581397
LMArena German13511384
LMArena Japanese12901352
LMArena Korean12981346
LMArena Russian13241400
LMArena Spanish13191371

Instruction Following Too close to call

GPT-4.1 mini: 73.7 (#118), GPT-5.3 Chat: 72.8 (#129)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Instruction Following13331378
IFEval90.4%—

Long Context GPT-5.3 Chat leads

GPT-4.1 mini: 31.8 (#275), GPT-5.3 Chat: 42.6 (#120)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Longer Query13441396
Fiction.LiveBench44.4%—

Writing & Preference GPT-5.3 Chat leads

GPT-4.1 mini: 48.6 (#199), GPT-5.3 Chat: 63.1 (#68)

BenchmarkGPT-4.1 miniGPT-5.3 Chat
LMArena Text13401389
LMArena Creative Writing13001355
EQ-Bench Creative Writing11471690
LMArena Multi-Turn13541412
WildBench83.8%—

Frequently asked questions

Is GPT-4.1 mini better than GPT-5.3 Chat?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 33.6 on the Noometry Index. GPT-4.1 mini costs 6.9× less per token, which makes it the better buy when GPT-5.3 Chat's lead doesn't matter for your workload.

Which is cheaper, GPT-4.1 mini or GPT-5.3 Chat?

GPT-4.1 mini is cheaper. It lists at $0.40 per million input tokens and $1.60 per million output tokens; GPT-5.3 Chat lists at $1.75 and $14.

Is GPT-4.1 mini or GPT-5.3 Chat better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 30.6 in the Noometry coding category.

Which has the bigger context window?

GPT-4.1 mini does, with 1.05M tokens against 128K.

How many benchmarks do GPT-4.1 mini and GPT-5.3 Chat share?

18 benchmarks have published results for both models. GPT-4.1 mini has 47 scored results on Noometry and GPT-5.3 Chat has 18.

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