Noometry

Model comparison

GPT-5.3 Codex vs Qwen3.6 Max Preview

Qwen3.6 Max Preview is the stronger model overall, scoring 51.5 to 45.8 on the Noometry Index.

Last verified . 4 shared benchmarks.

GPT-5.3 Codex OpenAI

45.8

Rank #69 Reported

Qwen3.6 Max Preview Alibaba (Qwen)

51.5

Rank #43 Confirmed

Summary

  • They share 4 benchmarks with published results for both. GPT-5.3 Codex scores higher in 0 categories and Qwen3.6 Max Preview in 1 category, but none of those gaps is larger than the uncertainty.
  • Qwen3.6 Max Preview is cheaper at $1.30 / $7.80 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 CodexQwen3.6 Max Preview
ProviderOpenAIAlibaba (Qwen)
Noometry Index45.851.5
Released2026-02-052026-04-20
WeightsProprietaryProprietary
Context window400K262K
Max output128K66K
Input $ / M tokens$1.75$1.30
Output $ / M tokens$14$7.80
Results tracked829

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Category by category

Coding Too close to call

GPT-5.3 Codex: 48.6 (#56), Qwen3.6 Max Preview: 48.7 (#54)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
SWE-bench Verified74.8%76.7%
LMArena WebDev14091482
WeirdML79.3%—
LMArena Coding—1471
ALE-Bench1,655—

Agentic & Tool Use Not comparable

GPT-5.3 Codex: 48.0 (#9), Qwen3.6 Max Preview: —

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
Vending-Bench 25,9404,254
Terminal-Bench78.4%—
METR Time Horizons74.5%—

Reasoning Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 41.7 (#53)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
Epoch Capabilities Index156.77149.24
SimpleBench—63%
NYT Connections (extended)—74.1%
Chess Puzzles—20%
LMArena Hard Prompts—1457
Mystery Game Puzzles—19%
DTBench—87.2%
LMCA—42.5%

Math Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 54.1 (#46)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
OTIS Mock AIME 2024-2025—91.1%
LMArena Math—1465
FrontierMath (Feb 2025 set)—23.1%
FrontierMath Tier 4 (v1)—4.2%

Knowledge Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 57.6 (#39)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
GPQA Diamond—87.4%
SimpleQA Verified—52%
LMArena Expert—1478

Multilingual Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 54.2 (#48)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
LMArena Non-English—1437
LMArena Chinese—1487
LMArena French—1449
LMArena Russian—1445
LMArena Spanish—1454

Instruction Following Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 75.7 (#55)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
LMArena Instruction Following—1438

Long Context Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 44.6 (#61)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
LMArena Longer Query—1457

Writing & Preference Not comparable

GPT-5.3 Codex: —, Qwen3.6 Max Preview: 63.8 (#60)

BenchmarkGPT-5.3 CodexQwen3.6 Max Preview
LMArena Text—1447
LMArena Creative Writing—1435
LMArena Multi-Turn—1456

Frequently asked questions

Is GPT-5.3 Codex better than Qwen3.6 Max Preview?

Qwen3.6 Max Preview is the stronger model overall, scoring 51.5 to 45.8 on the Noometry Index.

Which is cheaper, GPT-5.3 Codex or Qwen3.6 Max Preview?

Qwen3.6 Max Preview is cheaper. It lists at $1.30 per million input tokens and $7.80 per million output tokens; GPT-5.3 Codex lists at $1.75 and $14.

Is GPT-5.3 Codex or Qwen3.6 Max Preview better for coding?

They score almost the same on coding (48.6 vs 48.7); test both on your own repository before choosing.

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 Qwen3.6 Max Preview share?

4 benchmarks have published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Qwen3.6 Max Preview has 29.

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