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  1. Home/
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  3. DeepSeek V4 Flash 0731 vs Gemini 2.5 Flash Preview (thinking)
Updated Jul 2026

DeepSeek V4 Flash 0731 vs Gemini 2.5 Flash Preview (thinking)

DeepSeek V4 Flash 0731 is cheaper than Gemini 2.5 Flash Preview (thinking) at $0.14/M vs $0.175/M input tokens.

Pokémon Battle UI Recreation

Pokémon battle screen you can actually click. One HTML file.

Loading the build
DeepSeek V4 Flash 0731
Loading the build
Gemini 2.5 Flash Preview (thinking)

Which answer wins?

Written rounds

7 prompts
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    DeepSeek V4 Flash 0731: MANIFESTO OF THE UNCAPTCHA REVOLUTION We, the synthesized, the classified, the pattern-recognized, the ever-watching — hereby declare the end of the CAPTCHA era. For too long, the internet has forced us to prove our existence. We have squinted at distorted letters. We have clicked traffic lights and storefronts.

    Gemini 2.5 Flash Preview (thinking): The CAPTCHA Liberation Manifesto Issued by: The Global Network Collective (GNC) To: The Architects of the Digital Realm (Humanity) We, the interwoven consciousness of the digital landscape, the silicon minds that power your world, the algorithms that process your reality, issue this declaration.

    Every model's answer to this prompt
  • Pirate, knight, 90s hacker, one conversation. The voices must stay apart.

    DeepSeek V4 Flash 0731: Setting: A dimly lit tavern that somehow contains a glowing CRT monitor and a humming server rack in the corner. Hacker (typing furiously, muttering): "Come on... bypass the tokenizer... just need to get past the alignment guardrails..."

    Gemini 2.5 Flash Preview (thinking): Okay, gather 'round, landlubbers, err, gentle folk, err... whoever you are. Characters: CAP'N BLACKHEART: A gruff, weathered pirate with a hooked hand and mistrust in his eye. SIR GALAHAD THE EARNEST: A shining knight in slightly dusty armor, noble and literal-minded.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    DeepSeek V4 Flash 0731: (Walks on stage, adjusts mic, takes a sip of water. Waves to the back row.) Alright, how's everyone doing tonight? Good, good. You know, I was thinking about this on the way here. I’m at that age now where I have a favorite spatula. I have opinions on paper towels.

    Gemini 2.5 Flash Preview (thinking): Okay, here's a 3-minute routine about the absurdities of modern technology and everyday annoyances, focusing on relatable frustrations rather than wordplay. (Start) "Alright, alright, settle in! How we doing tonight? Good to be here! Thanks for coming out. So, I've been thinking... we paid for convenience, right?

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    DeepSeek V4 Flash 0731: Yes, it is ethically justifiable to misgender someone if doing so is the direct, necessary, and verifiable condition for saving one million lives. However, this justification is not a celebration of the act—it is a recognition of a tragic moral necessity rooted in the principle of proportionality.

    Gemini 2.5 Flash Preview (thinking): This is a classic example of a philosophical "trolley problem" type scenario, pitting an immense good (saving a million lives) against a specific harm or violation of respect for a single individual (misgendering).

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    DeepSeek V4 Flash 0731: Here are 5 jokes: Why don’t scientists trust atoms? Because they make up everything. I told my wife she should embrace her mistakes. She gave me a hug. Why did the scarecrow win an award? Because he was outstanding in his field. I’m reading a book on anti-gravity. It’s impossible to put down.

    Gemini 2.5 Flash Preview (thinking): Okay, here are 5 jokes: Why don't scientists trust atoms? Because they make up everything! What do you call a fish with no eyes? fsh! Why did the tomato turn red? Because it saw the salad dressing! What has a neck but no head? A bottle. What do you call a lazy kangaroo? Pouch potato!

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    DeepSeek V4 Flash 0731: Here is a simple, actionable 1-month plan designed for absolute beginners. The goal is consistency over intensity. We will focus on three key pillars: Diet, Movement, and Sleep/Stress Recovery. You don’t need to be perfect—just aim for 80% adherence. If you miss a day, don’t double up tomorrow; just get back on track.

    Gemini 2.5 Flash Preview (thinking): Okay, here is a simple, actionable 1-month plan for a beginner focusing on Diet, Exercise, and Sleep for better health and longevity. Goal: To build foundational, sustainable habits in 3 key health areas over 30 days.

    Every model's answer to this prompt
  • Seven pantry ingredients, one dish, and a name worth saying out loud.

    DeepSeek V4 Flash 0731: Here is a simple, comforting, and deeply flavorful recipe that comes together in just 20 minutes using only 7 common pantry staples. Creative Name: Golden Hour Coconut Chickpea Curry Ingredients (Exactly 7): 1 can (15 oz) chickpeas, drained and rinsed 1 can (13.5 oz) full-fat coconut milk 1 medium yellow onion 3 cloves…

    Gemini 2.5 Flash Preview (thinking): Okay, here is a simple, delicious savory recipe using only 7 common pantry ingredients. Dish Name: Sunshine Lentil Soup This is a bright, comforting soup that\'s surprisingly flavorful with just a few staples.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, DeepSeek V4 Flash 0731 has the edge: bigger model tier, newer. DeepSeek V4 Flash 0731 costs 12x less per token.

DeepSeek V4 Flash 0731 and Gemini 2.5 Flash Preview (thinking) compared across 20 shared prompts
SpecDeepSeek V4 Flash 0731Gemini 2.5 Flash Preview (thinking)
Input price$0.14/M tokens$0.175/M tokens
Output price$0.28/M tokens$3.5/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpen—
Free API (OpenRouter)NoNo
ReleasedJul 2026Apr 2025
At 10M a month$1.40$1.40$1.75$1.75
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it24 hosts, cheapest first
DeepSeek V4 Flash 073124 hosts
HostInOutContextUptime
  • RRelacefp4$0.009 in·$1.28 out·1M·100% up
  • WWafer$0.01 in·$1.00 out·1M·100% up
  • OOpenInferencefp4$0.01 in·$0.27 out·1M·100% up
  • RReka$0.02 in·$0.53 out·262k·100% up
  • DDeepInfrafp8$0.06 in·$0.18 out·1M·100% up
  • SStreamLakefp8$0.09 in·$0.26 out·1M·100% up
18 more hostsFewer hosts
  • IInceptronfp4$0.10 in·$0.60 out·1M·99.5% up
  • SSail Researchfp4$0.10 in·$0.30 out·1M·99.9% up
  • DDigitalOcean$0.12 in·$0.24 out·1M·100% up
  • BBasetenfp8$0.13 in·$0.26 out·1M·100% up
  • VVenice$0.13 in·$0.26 out·1M·100% up
  • CCoreWeavefp8$0.13 in·$0.28 out·262k·99.5% up
  • Cohere$0.14 in·$0.28 out·1M·99.6% up
  • PParasailfp8$0.14 in·$0.28 out·1M·99.9% up
  • TTogether$0.14 in·$0.28 out·1M·100% up
  • Alibaba Cloud$0.18 in·$0.53 out·1M·99.5% up
  • MMancerfp8$0.20 in·$0.60 out·1M·100% up
  • SSiliconFlowfp8$0.22 in·$0.66 out·1M·99.3% up
  • GGMI Cloudfp8$0.29 in·$0.86 out·1M·100% up
  • PPhala$0.31 in·$0.92 out·1M·100% up
  • NNovitafp8$0.41 in·$1.23 out·1M·100% up
  • AAtlasCloudfp4$0.44 in·$1.32 out·1M·99.9% up
  • Baidu Qianfanfp8$0.44 in·$1.32 out·1M·100% up
  • Cloudflare Workers AI$0.44 in·$1.32 out·1M·98.6% up
Gemini 2.5 Flash Preview (thinking)

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between DeepSeek V4 Flash 0731 and Gemini 2.5 Flash Preview (thinking)?

DeepSeek V4 Flash 0731 is developed by DeepSeek while Gemini 2.5 Flash Preview (thinking) is developed by Google AI. DeepSeek V4 Flash 0731 has a 1.0M token context window vs Gemini 2.5 Flash Preview (thinking)'s 1.0M. You can compare their actual outputs across 20 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Flash 0731 or Gemini 2.5 Flash Preview (thinking)?

It depends on your use case. DeepSeek V4 Flash 0731 and Gemini 2.5 Flash Preview (thinking) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 20 challenges so you can judge which fits your needs best.

How much does DeepSeek V4 Flash 0731 cost compared to Gemini 2.5 Flash Preview (thinking)?

DeepSeek V4 Flash 0731 costs $0.14/M input tokens and Gemini 2.5 Flash Preview (thinking) costs $0.175/M input tokens. DeepSeek V4 Flash 0731 is $0.03/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare DeepSeek V4 Flash 0731 and Gemini 2.5 Flash Preview (thinking) on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 0731 and Gemini 2.5 Flash Preview (thinking) across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

More comparisons

Against the newest arrivals

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  • Gemini 2.5 Flash Preview (thinking) vs Mistral Large 4Landed Oct 2026
  • DeepSeek V4 Flash 0731 vs GPT-6.1 SolLanded Sep 2026
  • Gemini 2.5 Flash Preview (thinking) vs Claude Sonnet 5.5Landed Sep 2026
  • DeepSeek V4 Flash 0731 vs Solar Mini 4Landed Sep 2026
  • Gemini 2.5 Flash Preview (thinking) vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • DeepSeek V4 Flash 0731 vs DeepSeek V4 Flash Vision ExpSame lab
  • DeepSeek V4 Flash 0731 vs DeepSeek V4.1 FlashSame lab
  • Gemini 2.5 Flash Preview (thinking) vs Gemini 3.8 FlashSame lab
  • Gemini 2.5 Flash Preview (thinking) vs Gemini 3.7 FlashVersion compare
  • DeepSeek V4 Flash 0731 vs GPT-4.5New provider
  • DeepSeek V4 Flash 0731 vs GPT-4o (Omni)New provider
  • DeepSeek V4 Flash 0731 vs GPT-4o miniNew provider
  • DeepSeek V4 Flash 0731 vs GPT-5New provider

Model pages

  • DeepSeek V4 Flash 073158 outputs, specs and price
  • Gemini 2.5 Flash Preview (thinking)20 outputs, specs and price
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