Noometry

Model comparison

gpt-oss-20b vs Granite 4.0 Micro

gpt-oss-20b is the stronger model overall, scoring 32.5 to 29.0 on the Noometry Index.

Last verified . 8 shared benchmarks.

gpt-oss-20b OpenAI

32.5

Rank #255 Confirmed

Granite 4.0 Micro IBM

29.0

Rank #318 Confirmed

Summary

  • They share 8 benchmarks with published results for both. gpt-oss-20b scores higher in 3 categories and Granite 4.0 Micro in 2 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where gpt-oss-20b leads 39.4 to 12.0.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 65.3% for gpt-oss-20b and 2.8% for Granite 4.0 Micro.
  • gpt-oss-20b is cheaper at $0.018 / $0.09 per million input/output tokens, against $0.017 / $0.11 for Granite 4.0 Micro.
  • gpt-oss-20b accepts more context: 131K tokens versus 131K.

Side by side

gpt-oss-20bGranite 4.0 Micro
ProviderOpenAIIBM
Noometry Index32.529.0
Released2025-08-052025-10-02
WeightsOpenOpen
Context window131K131K
Max output16K118K
Input $ / M tokens$0.018$0.017
Output $ / M tokens$0.09$0.11
Results tracked348

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Category by category

Coding Not comparable

gpt-oss-20b: 37.6 (#192), Granite 4.0 Micro: —

Benchmarkgpt-oss-20bGranite 4.0 Micro
SciCode34.4%—
WeirdML40.9%—
LMArena Coding1306—
ALE-Bench566.05—

Agentic & Tool Use Not comparable

gpt-oss-20b: 9.3 (#154), Granite 4.0 Micro: —

Benchmarkgpt-oss-20bGranite 4.0 Micro
Terminal-Bench3.4%—

Reasoning Too close to call

gpt-oss-20b: 19.3 (#261), Granite 4.0 Micro: 19.2 (#265)

Benchmarkgpt-oss-20bGranite 4.0 Micro
Chess Puzzles4%0%
Kagi LLM Benchmark53.2%—
CritPt1.4%—
LMArena Hard Prompts1274—
DTBench68%—
LMCA14.5%—
Epoch Capabilities Index137.82—

Math gpt-oss-20b leads

gpt-oss-20b: 39.4 (#103), Granite 4.0 Micro: 12.0 (#307)

Benchmarkgpt-oss-20bGranite 4.0 Micro
OTIS Mock AIME 2024-202565.3%2.8%
Omni-MATH56.5%20.9%
LMArena Math1317—

Knowledge gpt-oss-20b leads

gpt-oss-20b: 34.6 (#195), Granite 4.0 Micro: 9.9 (#304)

Benchmarkgpt-oss-20bGranite 4.0 Micro
GPQA Diamond60.8%28.3%
MMLU-Pro74%39.5%
GPQA (HELM)59.4%30.7%
LMArena Expert1258—

Multilingual Not comparable

gpt-oss-20b: 42.2 (#197), Granite 4.0 Micro: —

Benchmarkgpt-oss-20bGranite 4.0 Micro
LMArena Non-English1268—
LMArena Chinese1314—
LMArena German1255—
LMArena Japanese1244—
LMArena Korean1236—
LMArena Russian1278—
LMArena Spanish1267—

Instruction Following Granite 4.0 Micro leads

gpt-oss-20b: 61.8 (#240), Granite 4.0 Micro: 69.9 (#169)

Benchmarkgpt-oss-20bGranite 4.0 Micro
IFEval73.2%84.9%
LMArena Instruction Following1236—

Long Context Not comparable

gpt-oss-20b: 37.9 (#209), Granite 4.0 Micro: —

Benchmarkgpt-oss-20bGranite 4.0 Micro
LMArena Longer Query1250—

Writing & Preference Granite 4.0 Micro leads

gpt-oss-20b: 35.5 (#265), Granite 4.0 Micro: 46.7 (#216)

Benchmarkgpt-oss-20bGranite 4.0 Micro
WildBench73.7%67%
LMArena Text1287—
LMArena Creative Writing1201—
EQ-Bench Creative Writing666—
LMArena Multi-Turn1268—

Frequently asked questions

Is gpt-oss-20b better than Granite 4.0 Micro?

gpt-oss-20b is the stronger model overall, scoring 32.5 to 29.0 on the Noometry Index.

Which is cheaper, gpt-oss-20b or Granite 4.0 Micro?

gpt-oss-20b is cheaper. It lists at $0.018 per million input tokens and $0.09 per million output tokens; Granite 4.0 Micro lists at $0.017 and $0.11.

Which has the bigger context window?

gpt-oss-20b does, with 131K tokens against 131K.

How many benchmarks do gpt-oss-20b and Granite 4.0 Micro share?

8 benchmarks have published results for both models. gpt-oss-20b has 34 scored results on Noometry and Granite 4.0 Micro has 8.

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