VerdictPal · editorial desk · 2026VerdictPal

Compare · Two models, head-to-head

Pick two models. See the diff.

Composite scores, benchmark ranks, capability grids, and pricing per million tokens. All sourced from the same data that powers the model atlas.

Cards Models

OpenAI o3 vs GPT-5.2

Model A

Model B

MODEL A

OpenAI o3

OpenAI · OpenAI o

Composite 70Intel 3021 rows7 sources

OpenAI's April 2025 reasoning model. Extended thinking for math, code, and science. LiveBench 68.5%, LongBench v2 51.2%, BFCL 78.1%.

MODEL B

GPT-5.2

OpenAI · GPT-5

Composite 71Intel 4218 rows5 sources

OpenAI's December 2025 frontier. 410K context, 128K output, configurable reasoning effort. $1.75/$14 per 1M tokens.

OpenAI o32stats won

Tied0stats

GPT-5.25stats won

Spec showdown

Capacity, price, freshness.

OpenAI o3vsGPT-5.2

Composite scores are within 5 points — 70 for OpenAI o3 vs 71 for GPT-5.2. The choice comes down to capability profile and price. GPT-5.2 has the higher Vals/AA intelligence score (42 vs 30). GPT-5.2's 410K context window dwarfs OpenAI o3's 200K — a meaningful difference for long-document or codebase work.

Composite score
OpenAI o370GPT-5.271Winner on this row
Intelligence (Vals/AA)
OpenAI o330GPT-5.242Winner on this row
Context window
OpenAI o3200KGPT-5.2410KWinner on this row
Max output
OpenAI o3100KGPT-5.2128KWinner on this row
Input price / 1M (lower wins)
OpenAI o3—GPT-5.2$1.8Winner on this row
Output speed (AA default API)
OpenAI o3155 t/sWinner on this rowGPT-5.287 t/s
Time to first token (AA default API)
OpenAI o34.84sWinner on this rowGPT-5.297.23s

Composite score

Intelligence (Vals/AA)

Context window

200K

410K

Max output

100K

128K

Input price / 1M (lower wins)

—

$1.8

Output speed (AA default API)

155 t/s

87 t/s

Time to first token (AA default API)

4.84s

97.23s

Capability grid

What each model can do.

Modalities

OpenAI o3GPT-5.2

Text●●

Image●●

Audio——

Video——

Code●●

Tool use●●

Reasoning●●

Access

OpenAI o3GPT-5.2

API●●

Consumer app——

Open weights——

Managed cloud●●

On-device——

Family radar

Top score per benchmark family.

Knowledge

Reasoning

Math

Coding

Agentic

Long context

Benchmark ranks

Every shared benchmark, side by side.

Knowledge

MMLU-Pro#6/21 · #4/21

85.3%

87.4%

Reasoning

Artificial Analysis Intelligence Index#48/67 · #29/67

30.4%

42.2%

GPQA Diamond#43/69 · #22/69

82.7%

90.3%

Humanity's Last Exam#45/65 · #27/65

20%

35.4%

IFBench#30/57 · #19/57

71.43%

75.44%

Math

AIME#8/19 · #6/19

88.33%

89.2%

MATH#1/20 · #7/20

99.2%

87.2%

Coding

LiveCodeBench#4/13 · #2/13

80.8%

88.9%

SciCode#49/65 · #21/65

41%

52.1%

Agentic

Terminal-Bench#55/69 · #46/69

37.12%

46.97%

τ³-Bench Banking#11/64 · #9/64

80.7%

84.8%

Long context

AA-LCR#27/64 · #12/64

69.33%

72.67%

Performance

AA output speed#16/69 · #30/69

155 t/s

87 t/s

AA time to first token#26/69 · #3/69

4.84s

97.23s

Dossier facts

Dates, sources, fineprint.

OpenAI o3GPT-5.2

ProviderOpenAIOpenAI

FamilyOpenAI oGPT-5

Release date2025-04-162025-12-11

Knowledge cutoff2024-06-012025-08-01

Context window200K410K

Max output100K128K

Input price /1M—$1.8

Output price /1M—$14

Statussolidsolid

Composite score7071

Intelligence score3042

Intel sourceaaaa

Benchmark rows2118

Source count75

Freshnessfreshfresh

Pricing checked2026-06-092026-06-02

Ecosystem

Which tools wrap each model.

OpenAI o3

chatgpt

GPT-5.2

Not listed in any tool yet.

Verdict

Which model to actually pick.

Open OpenAI o3's dossier Open GPT-5.2's dossier