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Model comparison

Gemini 2.5 Pro vs GPT-5.2

Data verified

Head-to-head evidence from 18 shared benchmark results across 7 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

57.25/100
Margin
1.2pts
winning →
GPT-5.2
OpenAI
58.43/100
0 category wins3 category wins

Public leaderboard positions: Gemini 2.5 Pro #70 (Supported); GPT-5.2 #64 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemini 2.5 Pro and GPT-5.2 share 18 comparable benchmark results. 3 of 8 categories are comparable. 6 results are unique to Gemini 2.5 Pro; 10 to GPT-5.2.

Updated July 20, 2026
Shared results
18
Gemini 2.5 Pro only
6
GPT-5.2 only
10
Comparable categories
3 / 8

Pick GPT-5.2 if you want the stronger benchmark profile. Gemini 2.5 Pro only becomes the better choice if you want the cheaper token bill or you need the larger 1M context window.

Confidence note. This is a partial-evidence comparison with 18 shared benchmark results across 7 evidence categories; 3 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

GPT-5.2 has the cleaner BenchAlign overall profile here, landing at 58.43 versus 57.25. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

GPT-5.2's sharpest advantage is in knowledge, where it averages 92.4 against 27.4. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 14.138% to 40.700%.

GPT-5.2 is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $1.25 input / $10.00 output per 1M tokens for Gemini 2.5 Pro. GPT-5.2 is the reasoning model in the pair, while Gemini 2.5 Pro is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Gemini 2.5 Pro gives you the larger context window at 1M, compared with 400K for GPT-5.2.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for Gemini 2.5 Pro and GPT-5.2
CategoryGemini 2.5 ProΔGPT-5.2
KnowledgeGemini 2.5 Pro27.4Margin→ 65.0GPT-5.292.4
MathGemini 2.5 Pro11.6Margin→ 23.6GPT-5.235.2
CodingGemini 2.5 Pro63.8Margin→ 6.8GPT-5.270.6
AgenticGemini 2.5 ProNot measuredMarginNo overlapGPT-5.255.7
ReasoningGemini 2.5 ProNot measuredMarginNo overlapGPT-5.252.9
MultimodalGemini 2.5 ProNot measuredMarginNo overlapGPT-5.280.4

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Gemini 2.5 ProB · GPT-5.2

  1. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 14.138%B 40.700%
    Winner: GPT-5.2Δ 26.6
    FrontierMath v2 (Tiers 1-3): Gemini 2.5 Pro scored 14.138%; GPT-5.2 scored 40.700%. GPT-5.2 wins this benchmark.

  2. SWE-bench Verified

    Coding
    Source ↗
    A 63.8%B 80%
    Winner: GPT-5.2Δ 16.2
    SWE-bench Verified: Gemini 2.5 Pro scored 63.8%; GPT-5.2 scored 80%. GPT-5.2 wins this benchmark.

  3. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 4.167%B 18.800%
    Winner: GPT-5.2Δ 14.6
    FrontierMath v2 (Tier 4): Gemini 2.5 Pro scored 4.167%; GPT-5.2 scored 18.800%. GPT-5.2 wins this benchmark.

  4. GPQA

    Knowledge
    Source ↗
    A 83%B 92.4%
    Winner: GPT-5.2Δ 9.4
    GPQA: Gemini 2.5 Pro scored 83%; GPT-5.2 scored 92.4%. GPT-5.2 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGemini 2.5 ProGPT-5.2Comparison
Input / output priceUSD per 1M tokensGemini 2.5 Pro$1.25 input / $10 outputGPT-5.2$1.75 input / $14 outputGemini 2.5 Pro has the lower combined listed price.
Generation speedtokens per secondGemini 2.5 Pro117 tok/sGPT-5.273 tok/sGemini 2.5 Pro has the higher measured throughput.
First-answer latencyseconds to first tokenGemini 2.5 Pro21.19 sGPT-5.2130.34 sGemini 2.5 Pro reaches the first token sooner.
Context windowmaximum listed tokensGemini 2.5 Pro1MGPT-5.2400KGemini 2.5 Pro lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGemini 2.5 ProGPT-5.2Result
AA Agentic IndexSource 7.1%—Not comparable
τ²-bench resultsSource 54.1%84.8%GPT-5.2 leads
Gert LabsSource 42.01%46.54%GPT-5.2 leads
GDPval-AASource 8.3%—Not comparable
GDPval-AASource 665—Not comparable
BrowseCompSource —65.8%Not comparable
OSWorld-VerifiedSource —47.3%Not comparable
JobBenchSource —34.3%Not comparable
CodingGPT-5.2 wins
BenchmarkGemini 2.5 ProGPT-5.2Result
SWE-bench VerifiedSource 63.8%80%GPT-5.2 leads
Vibe Code BenchSource 0.40%53.50%GPT-5.2 leads
AA Coding IndexSource 33.3%—Not comparable
AA-SciCodeSource 42.8%52.1%GPT-5.2 leads
SWE-bench ProSource —55.6%Not comparable
Reasoning
BenchmarkGemini 2.5 ProGPT-5.2Result
AA-LCRSource 66.0%72.7%GPT-5.2 leads
CritPtSource 2.6%11.6%GPT-5.2 leads
ARC-AGI-2Source —52.9%Not comparable
KnowledgeGPT-5.2 wins
BenchmarkGemini 2.5 ProGPT-5.2Result
GPQASource 83%92.4%GPT-5.2 leads
HLESource 18.8%—Not comparable
Artificial Analysis Intelligence IndexSource 25.8%42.2%GPT-5.2 leads
AA-GPQA DiamondSource 84.4%90.3%GPT-5.2 leads
AA-HLESource 21.1%35.4%GPT-5.2 leads
AA-Omniscience IndexSource -14.3%-1.0%GPT-5.2 leads
AA-Omniscience AccuracySource 39.0%43.8%GPT-5.2 leads
AA-Omniscience Hallucination RateSource 87.4%79.7%GPT-5.2 leads
MathGPT-5.2 wins
BenchmarkGemini 2.5 ProGPT-5.2Result
FrontierMath v2 (Tiers 1-3)Source 14.138%40.700%GPT-5.2 leads
FrontierMath v2 (Tier 4)Source 4.167%18.800%GPT-5.2 leads
AA AIME 2025Source —99.0%Not comparable
Multimodal
BenchmarkGemini 2.5 ProGPT-5.2Result
AA-MMMU-ProSource 74.9%—Not comparable
Design Arena WebsiteSource 11991227GPT-5.2 leads
MMMU-ProSource —79.5%Not comparable
MathVisionSource —83.0%Not comparable
CharXivSource —82.1%Not comparable
V*Source —75.9%Not comparable
Inst. Following
BenchmarkGemini 2.5 ProGPT-5.2Result
AA-IFBenchSource 48.7%75.4%GPT-5.2 leads
Frequently Asked Questions (4)

Which is better, Gemini 2.5 Pro or GPT-5.2?

GPT-5.2 is ahead on BenchLM's BenchAlign leaderboard, 58.43 to 57.25. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 14.138% and 40.700%.

Which is better for knowledge tasks, Gemini 2.5 Pro or GPT-5.2?

GPT-5.2 has the edge for knowledge tasks in this comparison, averaging 92.4 versus 27.4. Inside this category, Artificial Analysis Intelligence Index is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 2.5 Pro or GPT-5.2?

GPT-5.2 has the edge for coding in this comparison, averaging 70.6 versus 63.8. Inside this category, Vibe Code Bench is the benchmark that creates the most daylight between them.

Which is better for math, Gemini 2.5 Pro or GPT-5.2?

GPT-5.2 has the edge for math in this comparison, averaging 35.2 versus 11.6. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.

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