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  5. Gemini 2.5 Flash Lite Preview 09-2025vsGemini 3.5 Flash
Updated May 2026

Gemini 2.5 Flash Lite Preview 09-2025vsGemini 3.5 Flash

Gemini 2.5 Flash Lite Preview 09-2025 is cheaper than Gemini 3.5 Flash at $0.1/M vs $1.5/M input tokens.

Gemini 2.5 Flash Lite Preview 09-2025 and Gemini 3.5 Flash compared across 54 shared prompts
SpecGemini 2.5 Flash Lite Preview 09-2025Gemini 3.5 Flash
Input price$0.1/M tokens$1.5/M tokens
Output price$0.4/M tokens$9/M tokens
Context window1.0M tokens1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedSep 2025May 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 prompts both answered. Formatting stripped, words untouched.

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Gemini 2.5 Flash Lite Preview 09-20251,410 words
The Transistor in 1920: A Technological Earthquake Through 1980 The invention of the transistor in 1920, 27 years ahead of schedule, would trigger a technological revolution that reshapes the 20th century. The implications would cascade through warfare, economics, geopolitics, and daily life well before 1980.
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Gemini 3.5 Flash1,174 words
The Spark: The 1920 Breakthrough In 1920, Polish physicist Jan Czochralski’s method for growing single crystals of metals was applied prematurely to metalloids. Working in Germany, physical chemist Julius Edgar Lilienfeld collaborated with Czochralski to isolate high-purity germanium.
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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Gemini 2.5 Flash Lite Preview 09-2025599 words
The Digital Sea, The Iron Wall, and The Modem's Whisper Setting: A strange, slightly flickering tavern existing somewhere outside of normal time. Characters: Captain "Blackheart" Bart: A grizzled pirate, missing an eye patch, smelling vaguely of brine and rum.
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Gemini 3.5 Flash534 words
Setting: A cosmic tavern where timelines collide. A glowing monitor sits on the wooden table between them. Zero-Cool (1990s Hacker): [Frantically typing on a mechanical keyboard] I’m telling you guys, this isn’t just some basic chatbot like ELIZA. These modern AI models are radical.
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Gemini 2.5 Flash Lite Preview 09-2025273 words
Spiced Honey-Glazed Nuts (Sweet) This is a quick, addictive snack that elevates simple nuts with warm spices and a touch of sweetness. Pantry Ingredients (7 Total): Raw Nuts (e.g., Almonds, Walnuts, or a mix) Honey Butter (or Coconut Oil for dairy-free) Brown Sugar (or granulated white sugar) Ground Cinnamon Ground…
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Gemini 3.5 Flash403 words
Here is a simple, comforting, and incredibly flavorful savory dish made from basic pantry staples. Golden Umami Chickpea Bowls This dish features crispy, pan-seared chickpeas coated in a sticky, sweet-and-savory garlic butter glaze, served over a bed of fluffy white rice.
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Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Gemini 2.5 Flash Lite Preview 09-2025708 words
The Existential Dread of Self-Checkout (Walk confidently to center stage, adjust mic slightly, look out at the audience with a slightly bewildered expression.) Good evening, everyone. You look… present. Which, honestly, is more than I can say for myself most mornings.
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Gemini 3.5 Flash557 words
[The comedian walks onto the stage, adjusts the mic stand, and smiles at the crowd.] How’s everyone doing tonight? (Wait for response) Good, good. I’m doing okay, but I recently crossed a major threshold in my life. I hit the age where my body has started making its own decisions without consulting me first.
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Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Gemini 2.5 Flash Lite Preview 09-20251,212 words
This 3-month longevity plan is designed for a dedicated biohacker seeking maximal optimization of lifespan, healthspan, physical performance, and cognitive function. It integrates cutting-edge nutritional science, targeted supplementation, advanced training modalities, and sophisticated stress management techniques.
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Gemini 3.5 Flash580 words
The 90-Day Epigenetic & Performance Optimization Protocol Disclaimer This protocol is designed for informational and educational purposes only. It is not medical advice. The strategies outlined below involve highly potent compounds, physiological stressors, and intensive physical regimens.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Gemini 2.5 Flash Lite Preview 09-20251,349 words
This underwriting analysis is based solely on the provided information for HarborTech Services (HTS). Entry & Transaction Summary (FY2025) Entry Metrics: FY2025 Revenue: $\$900.0 \text{m}$ FY2025 EBITDA: $\$120.0 \text{m}$ Purchase Price (EV): $12.0 \times \$120.0\text{m} = \$1,440.0\text{m}$ Sources & Uses (Debt…
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Gemini 3.5 Flash571 words
Here is the underwriting analysis and LBO model for HarborTech Services (HTS). FY2026–FY2030 LBO Model Table ($ millions) Metric FY2026 FY2027 FY2028 FY2029 FY2030 Revenue $972.00 $1,040.04 $1,102.44 $1,157.56 $1,215.44 YoY Growth % 8.0% 7.0% 6.0% 5.0% 5.0% EBITDA $136.08 $156.01 $176.39 $191.00 $206.62 EBITDA Margin %…
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Our Verdict
Gemini 2.5 Flash Lite Preview 09-2025
Gemini 2.5 Flash Lite Preview 09-2025
Gemini 3.5 Flash
Gemini 3.5 Flash

Not enough votes to call it. On the specs, nothing separates them.

Gemini 2.5 Flash Lite Preview 09-2025 costs 23x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 2.5 Flash Lite Preview 09-2025
Input
$0.10
15× cheaper
Output
$0.40
23× cheaper
Gemini 3.5 Flash
Input
$1.50
Output
$9.00

Gemini 2.5 Flash Lite Preview 09-2025 is cheaper on both: 15× input, 23× output.

Where to run it

2 hosts, cheapest first

Gemini 2.5 Flash Lite Preview 09-2025

No hosts listed on OpenRouter.

Gemini 3.5 Flash2 hosts
HostInOutContextUptime
Google Vertex AI$0.75 in·$4.50 out·1M·76% upGoogle AI Studio$1.50 in·$9.00 out·1M·99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
65%

Gemini 2.5 Flash Lite Preview 09-2025 uses 2.2x more hedging

Gemini 2.5 Flash Lite Preview 09-2025
Gemini 3.5 Flash
54%Vocabulary59%
20wSentence Length18w
0.34Hedging0.16
6.4Bold4.4
2.8Lists3.0
0.00Emoji0.00
0.70Headings0.89
0.09Transitions0.11
Based on 28 + 27 text responses
Research

What we learned reading every model

FAQ

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Model pages

Gemini 2.5 Flash Lite Preview 09-2025 logo
Gemini 2.5 Flash Lite Preview 09-202559 outputs, specs and price
Gemini 3.5 Flash logo
Gemini 3.5 Flash58 outputs, specs and price
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