Why is this comparison indexable?

It has 6 verifiable comparison points, and both models have pricing or benchmark data.

Are missing metrics invented?

No. Metrics without LMSpeed data are omitted from this report.

Back to models

Data points: 102

Model compare

Gemini 2.5 Pro vs O3 Mini

The readout for Gemini 2.5 Pro and O3 Mini, before the detailed comparison sheet.

Model A

Gemini 2.5 Pro

Google

Contender

Model B

O3 Mini

OpenAI

Leading

Key Takeaways

Weighted outcome: O3 Mini. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.

Decision read

O3 Mini

O3 Mini has the higher weighted result; Model A / B score 38.7 to 61.3.

Evidence depth

102 data points

Includes 18 benchmark rows, 0 audit samples, and 10 provider examples.

Selection signal

Start with O3 Mini

The charts below split 28 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Model AModel B

Comparison sheet

This report only uses LMSpeed data for Gemini 2.5 Pro and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Model compare	Gemini 2.5 Pro	O3 Mini
Overall leader	Contender	Leading
Weighted overall score	38.7 pts	61.3 pts
Benchmark category leads	2 categories	4 categories
Operational advantages	Average speed, Free providers, Provider coverage	Cheapest input price, First-token latency
Context window	1.0M tokens	200K tokens
Max output	65.5K tokens	100K tokens
Modalities	Input TextImageFileAudiovideo Output Text	Input TextFile Output Text
Features	Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning	Text inputFile inputText outputTool callingStructured outputsJSON modeReasoning

The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.

Model metadata

Model compare	Gemini 2.5 Pro	O3 Mini
Developer	Google	OpenAI
Released	Jun 2025	Feb 2025
Parameters	No data	No data
Tokenizer	Gemini	GPT
Knowledge cutoff	2025-01-31	2023-10-31
OpenRouter ID	google/gemini-2.5-pro	openai/o3-mini
References	No data	No data

When to choose each model

This report only uses LMSpeed data for Gemini 2.5 Pro and O3 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Gemini 2.5 Pro

Gemini 2.5 Pro is stronger in benchmark categories (Agents, Reasoning) and operational dimensions (Average speed, Free providers, Provider coverage).

O3 Mini

O3 Mini is stronger in benchmark categories (Coding, Knowledge, Math, Instruction following) and operational dimensions (Cheapest input price, First-token latency).

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage: 6 / 8
Model B coverage: 6 / 8
Shared: 6 shared categories

Avg. score

Gemini 2.5 Pro

45.7

Avg. score

O3 Mini

48.3

Agents

Gemini 2.5 Pro leads by 4.6

Gemini 2.5 Pro44

O3 Mini39.4

Coding

O3 Mini leads by 0.4

Gemini 2.5 Pro38.8

O3 Mini39.2

Reasoning

Gemini 2.5 Pro leads by 4.3

Gemini 2.5 Pro53.6

O3 Mini49.3

Knowledge

O3 Mini leads by 12.0

Gemini 2.5 Pro35.8

O3 Mini47.8

Math

O3 Mini leads by 2.5

Gemini 2.5 Pro56

O3 Mini58.5

Multilingual

No data

Gemini 2.5 Pro-

O3 Mini-

Multimodal

No data

Gemini 2.5 Pro-

O3 Mini-

Instruction following

O3 Mini leads by 9.6

Gemini 2.5 Pro46

O3 Mini55.6

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Group

Aggregatereported

Provider	Gemini 2.5 Pro	O3 Mini
N1N10 tests	Gemini 2.5 Pro speed / latency 106 tok/s / 16405ms input / output No data	O3 Mini speed / latency 117 tok/s / 4809ms input / output No data
ZetaTechs API6 tests	Gemini 2.5 Pro speed / latency N/A / N/A input / output No data	O3 Mini speed / latency 44 tok/s / 17418ms input / output No data
DeepRouter5 tests	Gemini 2.5 Pro speed / latency 92 tok/s / 16347ms input / output No data	O3 Mini speed / latency N/A / N/A input / output No data
Rnglg2 API5 tests	Gemini 2.5 Pro speed / latency 111 tok/s / 17899ms input / output No data	O3 Mini speed / latency N/A / N/A input / output No data
9527 API0 tests	Gemini 2.5 Pro speed / latency N/A / N/A input / output No data	O3 Mini speed / latency N/A / N/A input / output No data
兔子API	Gemini 2.5 Pro gemini-2.5-pro-preview-03-25 speed / latency No data input / output $0/request	O3 Mini o3-mini-medium speed / latency No data input / output $0/request
LLMService	Gemini 2.5 Pro google/gemini-2.5-pro-preview speed / latency No data input / output $0.000001/request	O3 Mini openai/o3-mini speed / latency No data input / output $0.990/M/$4.00/M
云AI	Gemini 2.5 Pro gemini-2.5-pro-c speed / latency No data input / output $0.0010/request	O3 Mini o3-mini speed / latency No data input / output $0.030/M/$0.121/M
Newagiai	Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $0.171/M/$1.37/M	O3 Mini o3-mini-all speed / latency No data input / output $0.0033/request
柏拉图AI	Gemini 2.5 Pro gemini-2.5-pro speed / latency No data input / output $0.171/M/$1.37/M	O3 Mini o3-mini-all speed / latency No data input / output $0.0033/request

Comparison sheet

Model metadata

When to choose each model

Benchmark score comparison

Category performance

Agents

Coding

Reasoning

Knowledge

Math

Multilingual

Multimodal

Instruction following

Professional benchmark details

BenchLM overall score

Input price

Blended price

Output price

MMLU-Pro

GPQA

HLE

LiveCodeBench

SWE-bench Verified

AA-SciCode

BenchLM Coding score

AIME

MATH-500

BenchLM Knowledge score

Artificial Analysis Intelligence Index

AA-GPQA Diamond

AA-HLE

τ²-bench results

API audit comparison

Provider examples

FAQ

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