Noometry

OpenAI, proprietary

GPT-5.5 Instant

GPT-5.5 Instant by OpenAI ranks 110th of 354 ranked models on the Noometry Index as of October 2026, with a score of 42.7. Its strongest category is multimodal, where it ranks 52nd.

Last verified

Noometry rank
#110 of 354
Index score
42.7
Evidence
Confirmed 27 results
Provider
OpenAI
Released
May 5, 2026
Weights
Proprietary
Reasoning
Unknown
Context window
—
Max output
—
Input price
Not listed
Output price
Not listed
Blended price
Not listed
Output speed
Not measured
Value
Not ranked
Knowledge cutoff
Unknown

Category scores

Each category score combines every public result we have in that category.

  1. Coding 44.3
  2. Reasoning 24.9
  3. Math 26.5
  4. Knowledge 48.9
  5. Multimodal 40.0
  6. Multilingual 52.8
  7. Instruction Following 74.2
  8. Long Context 43.4
  9. Writing & Preference 61.8
CategoryScoreRankResults
Coding44.3#742
Reasoning24.9#1553
Math26.5#2594
Knowledge48.9#742
Multimodal40.0#521
Multilingual52.8#801
Instruction Following74.2#1001
Long Context43.4#961
Writing & Preference61.8#853

Strengths and weaknesses

Categories where GPT-5.5 Instant places highest and lowest among the models ranked in each, with its score against that category's median.

Strongest categories

CategoryScorevs medianRank
Coding44.3+5.5#74 of 340, top 22%
Knowledge48.9+11.6#74 of 314, top 24%
Multilingual52.8+5.4#80 of 297, top 27%

Weakest categories

CategoryScorevs medianRank
Math26.5−10.1#259 of 327, top 80%
Reasoning24.9+1.3#155 of 350, top 45%
Multimodal40.0+1.4#52 of 128, top 41%

Closest competitors

The models ranked just above and below GPT-5.5 Instant. When scores are this close, price and speed are often the better way to choose.

ModelRankScoreBlended $/MSpeed
Qwen3.5 Plus#10642.9$0.90—Compare
Amazon Nova Experimental Chat 26 01 10#10742.8——Compare
DeepSeek-V3.1#10842.8$0.42328Compare
GPT-5.3 Chat#10942.8$4.81—Compare
GPT-5.2 Codex#11142.6$4.81—Compare
Qwen3.5-Flash#11242.5$0.18—Compare
Nemotron 3 Ultra#11342.5$0.93—Compare
Hunyuan T1 20250711#11442.5——Compare

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Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

Coding

BenchmarkScorePositionSettingSourceDate
SciCode48.6%#49 of 121, top 41%Epoch AI
LMArena Coding1433#108 of 294, top 37%LMArena2026-10-08

Reasoning

BenchmarkScorePositionSettingSourceDate
CritPt0%#113 of 134, top 85%Epoch AI
Chess Puzzles12%#77 of 129, top 60%Epoch AI2026-08-02
LMArena Hard Prompts1426#95 of 297, top 32%LMArena2026-10-08
Epoch Capabilities Index142.52#96 of 213, top 46%Epoch AI2026-05-05

Math

BenchmarkScorePositionSettingSourceDate
FrontierMath (Tiers 1-3)26.3%#63 of 81, top 78%Epoch AI2026-08-02
FrontierMath Tier 42.4%#59 of 63, top 94%Epoch AI2026-08-02
OTIS Mock AIME 2024-202568.1%#95 of 173, top 55%Epoch AI2026-08-02
LMArena Math1420#102 of 285, top 36%LMArena2026-10-08

Knowledge

BenchmarkScorePositionSettingSourceDate
GPQA Diamond82.5%#73 of 186, top 40%Epoch AI2026-08-02
LMArena Expert1409#113 of 273, top 42%LMArena2026-10-08

Multimodal

BenchmarkScorePositionSettingSourceDate
LMArena Vision1250#54 of 122, top 45%LMArena2026-10-09
LMArena Document1403#38 of 38, top 100%LMArena2026-09-13

Multilingual

BenchmarkScorePositionSettingSourceDate
LMArena Non-English1417#80 of 297, top 27%LMArena2026-10-08
LMArena Chinese1456#97 of 285, top 35%LMArena2026-10-08
LMArena French1428#94 of 223, top 43%LMArena2026-10-08
LMArena German1411#85 of 231, top 37%LMArena2026-10-08
LMArena Japanese1408#52 of 211, top 25%LMArena2026-10-08
LMArena Korean1392#67 of 213, top 32%LMArena2026-10-08
LMArena Russian1431#66 of 283, top 24%LMArena2026-10-08
LMArena Spanish1429#84 of 226, top 38%LMArena2026-10-08

Instruction Following

BenchmarkScorePositionSettingSourceDate
LMArena Instruction Following1406#92 of 298, top 31%LMArena2026-10-08

Long Context

BenchmarkScorePositionSettingSourceDate
LMArena Longer Query1422#88 of 291, top 31%LMArena2026-10-08

Writing & Preference

BenchmarkScorePositionSettingSourceDate
LMArena Text1419#97 of 297, top 33%LMArena2026-10-08
LMArena Creative Writing1419#54 of 295, top 19%LMArena2026-10-08
LMArena Multi-Turn1433#80 of 295, top 28%LMArena2026-10-08

Compare GPT-5.5 Instant

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Frequently asked questions

How good is GPT-5.5 Instant?

GPT-5.5 Instant by OpenAI ranks 110th of 354 ranked models on the Noometry Index as of October 2026, with a score of 42.7. Its strongest category is multimodal, where it ranks 52nd.

Is GPT-5.5 Instant open source?

No. GPT-5.5 Instant is proprietary and available only through OpenAI's API and partner platforms.

What are GPT-5.5 Instant's strengths and weaknesses?

Relative to other ranked models, GPT-5.5 Instant places best in coding, knowledge, multilingual and lowest in math, reasoning, multimodal.

What is GPT-5.5 Instant best at?

Its best category is multimodal, where it ranks 52nd on Noometry.