Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo

Name: Google Gemini 2.5 Flash
Brand: Google
SKU: gemini-2-5-flash

Looking for an honest Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo comparison in 2026? We scored both ai language models on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Google Gemini 2.5 Flash comes out ahead 83/100 to 41/100 — a 42-point gap. The widest gap is in battery life, where the Google Gemini 2.5 Flash pulls noticeably ahead.

WINNER

Google

Gemini 2.5 Flash

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AI Matrix

Google Gemini 2.5 Flash clearly outperforms the OpenAI GPT-3.5 Turbo in the ai language models category, especially in battery life, scoring 83 vs 41. If you want the better overall ai language models, Google Gemini 2.5 Flash is the recommended choice.

Reviewed by VersusMatrix Editorial Team|Our methodology

5 Reasons Why Google Gemini 2.5 Flash Is Better

1.Better performance score: 83 vs 29
2.Higher camera score: 73 vs 30
3.Better battery score: 100 vs 1
4.Higher design rating: 74 vs 0
5.Higher overall score: 83 vs 41

Score Breakdown

Google Gemini 2.5 FlashOpenAI GPT-3.5 Turbo

Benchmark (MMLU)30% weight

Google Gemini 2.5 Flash Winner

Cost Efficiency20% weight

Tie

Arena ELO20% weight

Google Gemini 2.5 Flash Winner

100

Context Window10% weight

Google Gemini 2.5 Flash Winner

Speed (tok/s)10% weight

100

OpenAI GPT-3.5 Turbo Winner

Coding (HumanEval)10% weight

Google Gemini 2.5 Flash Winner

Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.

Google Gemini 2.5 Flash

Winner

✓ Pros

●Overall score 83/100 — top-tier
●Higher performance score
●Better battery score
●Better camera score

✗ Cons

●Lower display score

OpenAI GPT-3.5 Turbo

✓ Pros

●Better display score

✗ Cons

●Weaker battery score
●Lower camera score
●Lower performance score

💰 Token Pricing (per 1M tokens)

Lower cost = better value. Free = open-source self-hosted.

Metric	2.5 Flash	GPT-3.5 Turbo
Input (Prompt)	✓$0.15/1M	$0.50/1M
Output (Completion)	✓$0.60/1M	$1.50/1M
Open Source	Proprietary	Proprietary

⚡ Context Window & Speed

Context Window (tokens)

2.5 Flash1M

GPT-3.5 Turbo16K

Metric	2.5 Flash	GPT-3.5 Turbo
Max Output	✓65,536 tok	4,096 tok
Speed	200 tok/s	✓400 tok/s
Time to First Token	300ms	✓100ms
Languages	40+	✓50+

📊 Benchmark Scores

Higher is better. Industry-standard AI evaluation benchmarks.

2.5 Flash

GPT-3.5 Turbo

MMLU (Knowledge)

89.0|70.0

2.5 Flash

GPT-3.5 Turbo

HumanEval (Coding)

89.0|72.0

2.5 Flash

GPT-3.5 Turbo

MATH (Mathematics)

84.0|57.1

2.5 Flash

GPT-3.5 Turbo

GPQA (Expert Q&A)

78.0|30.0

2.5 Flash

GPT-3.5 Turbo

Chatbot Arena ELO

1350.0|1106.0

2.5 Flash

GPT-3.5 Turbo

🔧 Capabilities

Feature	2.5 Flash	GPT-3.5 Turbo
Reasoning / Chain-of-Thought	✓	✕
Vision (Image Input)	✓	✕
Audio Input	✓	✕
Video Input	✓	✕
Image/Audio Output	✕	✕
Function Calling / Tools	✓	✓
JSON Mode	✓	✓
Real-time Web Access	✓	✕
Fine-tuning Support	✕	✓
Batch API	✓	✓
Streaming	✓	✓
Open Source	✕	✕

ℹ️ Model Details

Field	2.5 Flash	GPT-3.5 Turbo
Provider	Google	OpenAI
Knowledge Cutoff	2025-01	2021-09
Best For	reasoningspeedmultimodalcost efficiencylong context	legacysimple taskshigh volumecost efficiency

Who Should Buy

Buy Google Gemini 2.5 Flash if…

Buy the Google Gemini 2.5 Flash if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Buy OpenAI GPT-3.5 Turbo if…

The OpenAI GPT-3.5 Turbo is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.

Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo — FAQ

Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo: which is better?

Is Google Gemini 2.5 Flash better than OpenAI GPT-3.5 Turbo?

Yes, Google Gemini 2.5 Flash scores higher overall (75 vs 75).

Which is cheaper, Google Gemini 2.5 Flash or OpenAI GPT-3.5 Turbo?

Check the latest prices using the buy links above.

Who should buy the Google Gemini 2.5 Flash?

Buy the Google Gemini 2.5 Flash if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.

Who should buy the OpenAI GPT-3.5 Turbo?

The OpenAI GPT-3.5 Turbo is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.

Reviewed by VersusMatrix Editorial Team

Last updated: April 25, 2026

Editorial guidelines

Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.

Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo

Gemini 2.5 Flash

AI Matrix

5 Reasons Why Google Gemini 2.5 Flash Is Better

GPT-3.5 Turbo

Spec Comparison

Score Breakdown

Google Gemini 2.5 Flash

OpenAI GPT-3.5 Turbo

💰 Token Pricing (per 1M tokens)

⚡ Context Window & Speed

📊 Benchmark Scores

🔧 Capabilities

ℹ️ Model Details

Who Should Buy

Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo — FAQ

Google Gemini 2.5 Flash vs OpenAI GPT-3.5 Turbo: which is better?

Is Google Gemini 2.5 Flash better than OpenAI GPT-3.5 Turbo?

Which is cheaper, Google Gemini 2.5 Flash or OpenAI GPT-3.5 Turbo?

Who should buy the Google Gemini 2.5 Flash?

Who should buy the OpenAI GPT-3.5 Turbo?

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