Noometry

Model comparison

GPT-5.3 Codex vs Qwen3 Max

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 43.7 on the Noometry Index. Qwen3 Max costs 2.0× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

Last verified . 3 shared benchmarks.

GPT-5.3 Codex OpenAI

45.8

Rank #69 Reported

Qwen3 Max Alibaba (Qwen)

43.7

Rank #87 Confirmed

Summary

  • They share 3 benchmarks with published results for both. GPT-5.3 Codex scores higher in 1 category and Qwen3 Max in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in coding, where GPT-5.3 Codex leads 48.6 to 43.0.
  • Qwen3 Max is cheaper at $1.20 / $6 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Codex.
  • GPT-5.3 Codex accepts more context: 400K tokens versus 262K.

Side by side

GPT-5.3 CodexQwen3 Max
ProviderOpenAIAlibaba (Qwen)
Noometry Index45.843.7
Released2026-02-052025-09-23
WeightsProprietaryProprietary
Context window400K262K
Max output128K66K
Input $ / M tokens$1.75$1.20
Output $ / M tokens$14$6
Results tracked833

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Category by category

Coding GPT-5.3 Codex leads

GPT-5.3 Codex: 48.6 (#56), Qwen3 Max: 43.0 (#93)

BenchmarkGPT-5.3 CodexQwen3 Max
ALE-Bench1,655370.45
SWE-bench Verified74.8%—
LMArena WebDev1409—
WeirdML79.3%—
LMArena Coding—1456

Agentic & Tool Use Not comparable

GPT-5.3 Codex: 48.0 (#9), Qwen3 Max: —

BenchmarkGPT-5.3 CodexQwen3 Max
Vending-Bench 25,94071.56
Terminal-Bench78.4%—
METR Time Horizons74.5%—

Reasoning Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 22.6 (#190)

BenchmarkGPT-5.3 CodexQwen3 Max
Epoch Capabilities Index156.77142.38
Kagi LLM Benchmark—72.5%
NYT Connections (extended)—30.1%
Chess Puzzles—4%
LMArena Hard Prompts—1448
Mystery Game Puzzles—5%
DTBench—82.1%
LMCA—28.3%

Math Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 38.7 (#131)

BenchmarkGPT-5.3 CodexQwen3 Max
FrontierMath (Tiers 1-3)—18.9%
OTIS Mock AIME 2024-2025—73.3%
LMArena Math—1446
MATH Level 5—97.1%

Knowledge Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 48.1 (#78)

BenchmarkGPT-5.3 CodexQwen3 Max
GPQA Diamond—72.6%
SimpleQA Verified—48.7%
LMArena Expert—1455

Multilingual Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 53.7 (#62)

BenchmarkGPT-5.3 CodexQwen3 Max
LMArena Non-English—1429
LMArena Chinese—1478
LMArena French—1449
LMArena German—1463
LMArena Japanese—1397
LMArena Korean—1399
LMArena Russian—1428
LMArena Spanish—1462

Instruction Following Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 74.8 (#87)

BenchmarkGPT-5.3 CodexQwen3 Max
LMArena Instruction Following—1419

Long Context Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 41.6 (#134)

BenchmarkGPT-5.3 CodexQwen3 Max
Fiction.LiveBench—66.7%
CL-bench—14.5%
LMArena Longer Query—1438

Writing & Preference Not comparable

GPT-5.3 Codex: —, Qwen3 Max: 62.4 (#76)

BenchmarkGPT-5.3 CodexQwen3 Max
LMArena Text—1439
LMArena Creative Writing—1402
LMArena Multi-Turn—1446

Frequently asked questions

Is GPT-5.3 Codex better than Qwen3 Max?

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 43.7 on the Noometry Index. Qwen3 Max costs 2.0× less per token, which makes it the better buy when GPT-5.3 Codex's lead doesn't matter for your workload.

Which is cheaper, GPT-5.3 Codex or Qwen3 Max?

Qwen3 Max is cheaper. It lists at $1.20 per million input tokens and $6 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

Is GPT-5.3 Codex or Qwen3 Max better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 43.0 in the Noometry coding category.

Which has the bigger context window?

GPT-5.3 Codex does, with 400K tokens against 262K.

How many benchmarks do GPT-5.3 Codex and Qwen3 Max share?

3 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Qwen3 Max has 33.

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