Noometry

Model comparison

GPT-5.1-Codex vs Qwen3.6 Max Preview

Qwen3.6 Max Preview is the stronger model overall, scoring 51.1 to 38.2 on the Noometry Index.

Last verified . 1 shared benchmarks.

GPT-5.1-Codex OpenAI

38.2

Rank #178 Reported

Qwen3.6 Max Preview Alibaba (Qwen)

51.1

Rank #36 Confirmed

Summary

  • They share 1 benchmark with published results for both. GPT-5.1-Codex scores higher in 0 categories and Qwen3.6 Max Preview in 2 categories; 2 gaps are clear of the uncertainty.
  • The widest gap is in math, where Qwen3.6 Max Preview leads 52.2 to 29.3.
  • Qwen3.6 Max Preview is cheaper at $1.30 / $7.80 per million input/output tokens, against $1.25 / $10 for GPT-5.1-Codex.
  • GPT-5.1-Codex accepts more context: 400K tokens versus 262K.

Side by side

GPT-5.1-CodexQwen3.6 Max Preview
ProviderOpenAIAlibaba (Qwen)
Noometry Index38.251.1
Released2025-11-122026-04-20
WeightsProprietaryProprietary
Context window400K262K
Max output128K66K
Input $ / M tokens$1.25$1.30
Output $ / M tokens$10$7.80
Results tracked629

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Category by category

Coding Qwen3.6 Max Preview leads

GPT-5.1-Codex: 41.7 (#107), Qwen3.6 Max Preview: 48.6 (#50)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
LMArena WebDev13371482
SWE-bench Verified—76.7%
SWE-bench Verified (bash only)66%—
LMArena Coding—1472
ALE-Bench1,245—

Agentic & Tool Use Not comparable

GPT-5.1-Codex: 37.8 (#32), Qwen3.6 Max Preview: —

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
Terminal-Bench60.4%—
METR Time Horizons70.8%—
Vending-Bench 2—4,254

Reasoning Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 40.8 (#47)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
SimpleBench—63%
NYT Connections (extended)—74.1%
Chess Puzzles—20%
LMArena Hard Prompts—1457
Mystery Game Puzzles—19%
DTBench—87.2%
LMCA—42.5%
Epoch Capabilities Index—149.27

Math Qwen3.6 Max Preview leads

GPT-5.1-Codex: 29.3 (#218), Qwen3.6 Max Preview: 52.2 (#40)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
OTIS Mock AIME 2024-2025—91.1%
ProofBench9%—
LMArena Math—1465
FrontierMath (Feb 2025 set)—23.1%
FrontierMath Tier 4 (v1)—4.2%

Knowledge Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 57.6 (#35)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
GPQA Diamond—87.4%
SimpleQA Verified—52%
LMArena Expert—1476

Multilingual Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 54.3 (#46)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
LMArena Non-English—1436
LMArena Chinese—1487
LMArena French—1449
LMArena Russian—1444
LMArena Spanish—1452

Instruction Following Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 75.8 (#51)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
LMArena Instruction Following—1437

Long Context Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 44.6 (#59)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
LMArena Longer Query—1457

Writing & Preference Not comparable

GPT-5.1-Codex: —, Qwen3.6 Max Preview: 64.0 (#58)

BenchmarkGPT-5.1-CodexQwen3.6 Max Preview
LMArena Text—1447
LMArena Creative Writing—1435
LMArena Multi-Turn—1456

Frequently asked questions

Is GPT-5.1-Codex better than Qwen3.6 Max Preview?

Qwen3.6 Max Preview is the stronger model overall, scoring 51.1 to 38.2 on the Noometry Index.

Which is cheaper, GPT-5.1-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-5.1-Codex lists at $1.25 and $10.

Is GPT-5.1-Codex or Qwen3.6 Max Preview better for coding?

Qwen3.6 Max Preview scores higher on coding benchmarks: 48.6 versus 41.7 in the Noometry coding category.

Which has the bigger context window?

GPT-5.1-Codex does, with 400K tokens against 262K.

How many benchmarks do GPT-5.1-Codex and Qwen3.6 Max Preview share?

1 benchmark has published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Qwen3.6 Max Preview has 29.

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