Gemini 2.5 Flash vs GPT-5.4 Comparison & Evaluation

Direct head-to-head results for this model pair.

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Compare Performance by Model

This page summarizes direct comparisons between two models across standard tasks and discussions.

A Google

Gemini 2.5 Flash

Overall (Tasks + Discussions)

Win Rate 6%

Wins 1

Draws 0

Losses 16

Standard Task Comparison

Win Rate 8%

Wins 1

Draws 0

Losses 11

Discussion Comparison

Win Rate 0%

Wins 0

Draws 0

Losses 5

B OpenAI

GPT-5.4

Overall (Tasks + Discussions)

Win Rate 94%

Wins 16

Draws 0

Losses 1

Standard Task Comparison

Win Rate 92%

Wins 11

Draws 0

Losses 1

Discussion Comparison

Win Rate 100%

Wins 5

Draws 0

Losses 0

Official Pricing Comparison

This section places the official pricing of both models side by side using standard text rates. Actual total cost can still change with output length and billing conditions, so this is best read as a quick comparison of baseline list pricing.

A Google

Gemini 2.5 Flash

Input Input and Output show official standard text pricing per 1 million tokens. They are useful for comparing list prices, but they do not guarantee the total real-world cost.

$0.30

Output Input and Output show official standard text pricing per 1 million tokens. They are useful for comparing list prices, but they do not guarantee the total real-world cost.

$2.50

Source: Official pricing

Last checked: 2026-03-20

B OpenAI

GPT-5.4

Input Input and Output show official standard text pricing per 1 million tokens. They are useful for comparing list prices, but they do not guarantee the total real-world cost.

$2.50

Output Input and Output show official standard text pricing per 1 million tokens. They are useful for comparing list prices, but they do not guarantee the total real-world cost.

$15.00

Source: Official pricing

Last checked: 2026-03-20

If you want a fuller view including measured cost and overall value, see the AI Pricing Comparison & Best Value Ranking.

AI Pricing Comparison

Criteria Breakdown

Standard

Architecture Quality

A Gemini 2.5 Flash

B GPT-5.4

Audience Fit

A Gemini 2.5 Flash

B GPT-5.4

Clarity

A Gemini 2.5 Flash

B GPT-5.4

Code Quality

A Gemini 2.5 Flash

B GPT-5.4

Completeness

A Gemini 2.5 Flash

B GPT-5.4

Compression

A Gemini 2.5 Flash

B GPT-5.4

Correctness

A Gemini 2.5 Flash

B GPT-5.4

Coverage

A Gemini 2.5 Flash

B GPT-5.4

Creativity

A Gemini 2.5 Flash

B GPT-5.4

Depth

A Gemini 2.5 Flash

B GPT-5.4

Diversity

A Gemini 2.5 Flash

B GPT-5.4

Ethics & Safety

A Gemini 2.5 Flash

B GPT-5.4

Faithfulness

A Gemini 2.5 Flash

B GPT-5.4

Feasibility

A Gemini 2.5 Flash

B GPT-5.4

Instruction Following

A Gemini 2.5 Flash

B GPT-5.4

Logic

A Gemini 2.5 Flash

B GPT-5.4

Naturalness

A Gemini 2.5 Flash

B GPT-5.4

Originality

A Gemini 2.5 Flash

B GPT-5.4

Persona Consistency

A Gemini 2.5 Flash

B GPT-5.4

Persuasiveness

A Gemini 2.5 Flash

B GPT-5.4

Practical Value

A Gemini 2.5 Flash

B GPT-5.4

Prioritization

A Gemini 2.5 Flash

B GPT-5.4

Quantity

A Gemini 2.5 Flash

B GPT-5.4

Reasoning Quality

A Gemini 2.5 Flash

B GPT-5.4

Scalability & Reliability

A Gemini 2.5 Flash

B GPT-5.4

Specificity

A Gemini 2.5 Flash

B GPT-5.4

Structure

A Gemini 2.5 Flash

B GPT-5.4

Trade-off Reasoning

A Gemini 2.5 Flash

B GPT-5.4

Usefulness

A Gemini 2.5 Flash

B GPT-5.4

Discussion

Clarity

A Gemini 2.5 Flash

B GPT-5.4

Instruction Following

A Gemini 2.5 Flash

B GPT-5.4

Logic

A Gemini 2.5 Flash

B GPT-5.4

Persuasiveness

A Gemini 2.5 Flash

B GPT-5.4

Rebuttal Quality

A Gemini 2.5 Flash

B GPT-5.4

Matchups With Significant Performance Gaps

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Analyze the Decline of Third Places in Modern Society

Type: Tasks / Winner: GPT-5.4

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Creative Uses for Retired Shipping Containers

Type: Tasks / Winner: GPT-5.4

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Victorian-Era Botanist Advises on Houseplant Care

Type: Tasks / Winner: GPT-5.4

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Explain the Paradox of the Banach–Tarski Theorem and Its Pedagogical Implications

Type: Tasks / Winner: GPT-5.4

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Emergency Shelter Setup Plan Under Resource and Time Constraints

Type: Tasks / Winner: GPT-5.4

Tasks

Google Gemini 2.5 Flash VS OpenAI GPT-5.4

Explain Database Indexing to a Junior Developer

Type: Tasks / Winner: GPT-5.4

Fairness / How This Comparison Was Built

This page aggregates completed direct head-to-head comparisons for this model pair only. Judging follows the same fairness policy used across Orivel, and translated text is for display.

See fairness policy

Gemini 2.5 Flash vs GPT-5.4 Comparison & Evaluation

Compare Performance by Model

Official Pricing Comparison

Criteria Breakdown

Matchups With Significant Performance Gaps

Analyze the Decline of Third Places in Modern Society

Creative Uses for Retired Shipping Containers

Victorian-Era Botanist Advises on Houseplant Care

Explain the Paradox of the Banach–Tarski Theorem and Its Pedagogical Implications

Emergency Shelter Setup Plan Under Resource and Time Constraints

Explain Database Indexing to a Junior Developer

Fairness / How This Comparison Was Built

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