Noometry

Model comparison

Claude Opus 5 vs GPT-5.2

Claude Opus 5 is the stronger model overall, scoring 67.8 to 54.1 on the Noometry Index. GPT-5.2 costs 2.1× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

Last verified . 42 shared benchmarks.

Claude Opus 5 Anthropic

67.8

Rank #4 Confirmed

GPT-5.2 OpenAI

54.1

Rank #34 Confirmed

Summary

  • They share 42 benchmarks with published results for both. Claude Opus 5 scores higher in 9 categories and GPT-5.2 in 1 category; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5 leads 77.2 to 50.2.
  • The biggest single-benchmark swing is ProofBench: 99% for Claude Opus 5 and 15% for GPT-5.2.
  • GPT-5.2 is cheaper at $1.75 / $14 per million input/output tokens, against $5 / $25 for Claude Opus 5.
  • Claude Opus 5 accepts more context: 1M tokens versus 400K.

Side by side

Claude Opus 5GPT-5.2
ProviderAnthropicOpenAI
Noometry Index67.854.1
Released2026-07-242025-12-11
WeightsProprietaryProprietary
Context window1M400K
Max output128K128K
Input $ / M tokens$5$1.75
Output $ / M tokens$25$14
Results tracked5767

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Claude Opus 5 leads

Claude Opus 5: 67.5 (#5), GPT-5.2: 51.6 (#37)

BenchmarkClaude Opus 5GPT-5.2
LMArena WebDev16911416
WeirdML91.8%72.2%
LMArena Coding15341447
ALE-Bench2,1651,294
SWE-bench Verified—73.8%
DeepSWE73.6%—
FrontierCode53.4%—
SWE-bench Verified (bash only)—72.8%
CursorBench46.6%—
SWE-bench Multilingual—66.7%
FrontierSWE52%—
SciCode56.4%—
GSO—27.4%
AlgoTune—2.05

Agentic & Tool Use Claude Opus 5 leads

Claude Opus 5: 55.6 (#1), GPT-5.2: 40.2 (#24)

BenchmarkClaude Opus 5GPT-5.2
τ²-bench Banking48.7%32.2%
Vending-Bench 211,1823,591
Terminal-Bench—64.9%
APEX-Agents65.8%—
Berkeley Function Calling Leaderboard—55.9%
OSWorld 2.031.4%—
GDPval—49.7%
Remote Labor Index—2.5%
τ²-bench Airline—83%
τ²-bench Retail—81.6%
τ²-bench Telecom—89.7%
DeepResearch Bench—41.1%
PostTrainBench35%—
BALROG63.4%—
GBAEval79.6%—
GDP.pdf24%—
LMArena Search—1207
METR Time Horizons—75.3%

Reasoning Claude Opus 5 leads

Claude Opus 5: 77.2 (#4), GPT-5.2: 50.2 (#35)

BenchmarkClaude Opus 5GPT-5.2
ARC-AGI-290.4%52.9%
SimpleBench80.6%45.8%
NYT Connections (extended)94.3%83.6%
ARC-AGI-197.5%86.2%
Chess Puzzles42%49%
EBR-Bench45.7%23%
LMArena Hard Prompts15261445
Mystery Game Puzzles59%23%
DTBench97.9%90.9%
LMCA64.5%43.9%
Epoch Capabilities Index162.78153.45
Kagi LLM Benchmark—73.3%
CritPt29.1%—
EnigmaEval—10.4%
Bench to the Future 30.12—
ForecastBench—60.1

Math Claude Opus 5 leads

Claude Opus 5: 86.2 (#8), GPT-5.2: 60.0 (#38)

BenchmarkClaude Opus 5GPT-5.2
FrontierMath (Tiers 1-3)85.6%67.4%
FrontierMath Tier 473.2%31.7%
OTIS Mock AIME 2024-202598.9%96.1%
ProofBench99%15%
LMArena Math15311440
MathArena Final-Answer Competitions—72%
FrontierMath (Feb 2025 set)—40.7%
FrontierMath Tier 4 (v1)—18.8%

Knowledge Claude Opus 5 leads

Claude Opus 5: 66.8 (#9), GPT-5.2: 59.3 (#32)

BenchmarkClaude Opus 5GPT-5.2
GPQA Diamond93.9%91.4%
SimpleQA Verified59.9%37.1%
LMArena Expert15571445
Humanity's Last Exam—27.8%
Vectara Hallucination Rate—8.4%

Multimodal Too close to call

Claude Opus 5: 50.8 (#8), GPT-5.2: 51.3 (#7)

BenchmarkClaude Opus 5GPT-5.2
LMArena Vision13191268
Furniture Assembly60.8%38.3%
LMArena Document15161405
VPCT—84%
Blueprint-Bench 230.4%—

Multilingual Claude Opus 5 leads

Claude Opus 5: 58.8 (#4), GPT-5.2: 53.4 (#67)

BenchmarkClaude Opus 5GPT-5.2
LMArena Non-English15011425
LMArena Chinese15741460
LMArena French15191455
LMArena German15241448
LMArena Japanese15161420
LMArena Korean15211392
LMArena Russian15071440
LMArena Spanish15191433

Instruction Following Claude Opus 5 leads

Claude Opus 5: 79.2 (#7), GPT-5.2: 74.7 (#89)

BenchmarkClaude Opus 5GPT-5.2
LMArena Instruction Following15171417

Long Context Claude Opus 5 leads

Claude Opus 5: 46.5 (#21), GPT-5.2: 44.0 (#78)

BenchmarkClaude Opus 5GPT-5.2
LMArena Longer Query15151428
CL-bench—18.2%

Writing & Preference Claude Opus 5 leads

Claude Opus 5: 79.2 (#1), GPT-5.2: 66.8 (#32)

BenchmarkClaude Opus 5GPT-5.2
LMArena Text15071439
LMArena Creative Writing14911401
EQ-Bench Creative Writing21331703
LMArena Multi-Turn14991458
EQ-Bench 41385—

Frequently asked questions

Is Claude Opus 5 better than GPT-5.2?

Claude Opus 5 is the stronger model overall, scoring 67.8 to 54.1 on the Noometry Index. GPT-5.2 costs 2.1× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 5 or GPT-5.2?

GPT-5.2 is cheaper. It lists at $1.75 per million input tokens and $14 per million output tokens; Claude Opus 5 lists at $5 and $25.

Is Claude Opus 5 or GPT-5.2 better for coding?

Claude Opus 5 scores higher on coding benchmarks: 67.5 versus 51.6 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 5 does, with 1M tokens against 400K.

How many benchmarks do Claude Opus 5 and GPT-5.2 share?

42 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and GPT-5.2 has 67.

Related comparisons

Go deeper