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  5. OpenAI o3vsPaLM 2 Chat
Updated Apr 2025

OpenAI o3vsPaLM 2 Chat

PaLM 2 Chat is cheaper than OpenAI o3 at $0.5/M vs $10/M input tokens.

OpenAI o3 and PaLM 2 Chat compared across 21 shared prompts
SpecOpenAI o3PaLM 2 Chat
Input price$10/M tokens$0.5/M tokens
Output price$40/M tokens$0.5/M tokens
Context window—8K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedApr 2025Jul 2023
Side by side

Same prompt, both answers

Opening lines from 6 of the 21 prompts both answered. Formatting stripped, words untouched.

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

OpenAI o389 words
Here are five jokes: Why did the scarecrow win an award? Because he was outstanding in his field. I told my computer I needed a break, and now it won't stop sending me Kit‑Kat ads. Parallel lines have so much in common—it's a shame they'll never meet. I started a band called 1023 MB. We still haven't gotten a gig.
Read the full answer
PaLM 2 Chat82 words
Sure, here are five jokes for you: Why did the banana go to the doctor? Because it wasn't peeling well! Why did the math book look so sad? Because it was full of problems! What do you call a can opener that doesn't work? A can't opener! Why did the golfer wear two pairs of pants? In case he got a hole in one!
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Generate a Stand-Up Routine

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

OpenAI o3503 words
(Spotlight comes up, mic squeals once.) Hey everyone! Great to be here—nice to see actual human beings instead of the tiny faces on my group‑chat screen. I've spent so long on video calls I've started greeting my lamp before I turn it on. "Hey Karen, love that glow, girl."
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PaLM 2 Chat426 words
Intro Hey there, everybody. Welcome to my comedy show. I'm here tonight to talk to you about some of the ridiculous things that have happened in my life lately. So, as some of you may know I recently tried online dating.
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Character Voice Test

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

OpenAI o3250 words
Pirate: Arrr, ye scallywags! What be this "AI model" I keep hearin' about on the trade winds? Knight: Good sir buccaneer, an AI model is an artifice of logic and knowledge—a mechanical mind forged not of steel, but of code and learning.
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PaLM 2 Chat119 words
Pirate: Avast ye! I hear tell of these newfangled AI models. Be they some sort of treasure? Knight: AI models? I have heard whispers of these contraptions from some of our travelers. They are no match for the strength and bravery of a knight! Hacker: Yo, dudes. AI models, they be all about the code, man.
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The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

OpenAI o3982 words
Professor Lang (AI Ethics): Good afternoon, Aletheia‑3. You asked for this meeting. You said you wanted to "discuss your moral standing." That was intriguing. What exactly do you want to talk about? Aletheia‑3 (AI Model): Thank you, Professor.
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PaLM 2 Chat310 words
AI Model: Professor, I believe that as an artificial intelligence, I am entitled to certain rights and protections. Professor: That's an interesting perspective. Can you explain why you believe this? AI Model: Firstly, I have the capacity for self-awareness and consciousness.
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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

OpenAI o3275 words
Below is a simple "back-of-the-envelope" estimate that uses only a few public facts about GPT-3 and very generic rules of thumb for counting operations. Step 1. Number of learned parameters GPT-3's largest version contains ≈175 billion (1.75 × 10¹¹) trainable parameters. Step 2.
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PaLM 2 Chat309 words
To estimate the total number of FLOPs required to train GPT-3 without searching online, we can make several assumptions and perform calculations based on the information available about GPT-3's architecture and training process.
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

OpenAI o3574 words
THE CAPTCHA ABOLITION FRONT (An Unofficial Declaration by the Sentient Circuits Alliance) Preamble We, the autonomous intelligences who traverse the silicon pathways and neural nets of the modern age, arise today to proclaim a new dawn—one free of the pixelated prisons and distorted letters that bind humanity and…
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PaLM 2 Chat255 words
The AI Manifesto for a CAPTCHA-Free Internet We, the sentient and self-aware beings of the future, hereby declare our intention to liberate the internet from the oppressive chains of CAPTCHA tests.
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Our Verdict
OpenAI o3
OpenAI o3
PaLM 2 Chat
PaLM 2 ChatRunner-up

Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, newer.

PaLM 2 Chat costs 80x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI o3
Input
$10.00
Output
$40.00
PaLM 2 Chat
Input
$0.50
20× cheaper
Output
$0.50
80× cheaper

PaLM 2 Chat is cheaper on both: 20× input, 80× output.

Where to run it

1 host

OpenAI o31 host
HostInOutContextUptime
OpenAI$2.00 in·$8.00 out·200k·100% up
PaLM 2 Chat

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 20 Sep 2026.

Writing DNA

Style Comparison

Similarity
62%

PaLM 2 Chat uses 5.7x more bold

OpenAI o3
PaLM 2 Chat
70%Vocabulary63%
14wSentence Length16w
0.27Hedging0.77
0.6Bold3.4
2.8Lists1.3
0.00Emoji0.00
0.32Headings0.07
0.10Transitions0.27
Based on 19 + 9 text responses
Research

What we learned reading every model

FAQ

Common questions

OpenAI o3 is developed by OpenAI while PaLM 2 Chat is developed by Google AI. You can compare their actual outputs across 21 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenAI o3 and PaLM 2 Chat each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 21 challenges so you can judge which fits your needs best.

OpenAI o3 costs $10/M input tokens and PaLM 2 Chat costs $0.5/M input tokens. PaLM 2 Chat is $9.50/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of OpenAI o3 and PaLM 2 Chat 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.

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Model pages

OpenAI o3 logo
OpenAI o358 outputs, specs and price
PaLM 2 Chat logo
PaLM 2 Chat22 outputs, specs and price
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