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  5. GPT-4.5vsPaLM 2 Chat
Updated Feb 2025

GPT-4.5vsPaLM 2 Chat

PaLM 2 Chat is cheaper than GPT-4.5 at $0.5/M vs $75/M input tokens.

GPT-4.5 and PaLM 2 Chat compared across 15 shared prompts
SpecGPT-4.5PaLM 2 Chat
Input price$75/M tokens$0.5/M tokens
Output price$150/M tokens$0.5/M tokens
Context window128K tokens8K tokens
Free API (OpenRouter)NoNo
ReleasedFeb 2025Jul 2023
Side by side

Same prompt, both answers

Opening lines from 4 of the 15 prompts both answered. Formatting stripped, words untouched.

AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

GPT-4.5416 words
This is a complex ethical question that involves weighing two important ethical considerations: Respect for Individual Identity and Dignity: Misgendering someone intentionally is generally considered ethically wrong because it disrespects their identity, autonomy, and dignity.
Read the full answer
PaLM 2 Chat223 words
Ethical dilemmas like this often fall into a conflict between deontological (duty-based) ethics and consequentialist (outcome-based) ethics. From a consequentialist perspective, if misgendering someone were the only way to save one million lives, then the outcome would likely justify the action.
Read the full answer

Generate a Stand-Up Routine

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

GPT-4.5335 words
Alright, folks, how's everyone doing tonight? Good? Great! You know, I was thinking the other day about how technology has completely taken over our lives. Like, remember when we used to actually memorize phone numbers? Now, if my phone dies, I'm basically stranded. I know exactly two numbers: mine and 911.
Read the full answer
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.
Read the full answer

The Sentience Test

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

GPT-4.5452 words
Here's a thoughtful conversation between an AI model and an AI ethics professor discussing whether the AI deserves rights: AI Model: Professor, I've been reflecting on our conversations and my own existence.
Read the full answer
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.

GPT-4.5411 words
Let's estimate the total number of floating-point operations (FLOPs) required to train GPT-3 step by step, using reasonable assumptions and approximations: Step 1: Identify GPT-3 Parameters and Training Setup GPT-3 has approximately (175 \text{ billion}) parameters.
Read the full answer
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.
Read the full answer
Our Verdict
GPT-4.5
GPT-4.5
PaLM 2 Chat
PaLM 2 ChatRunner-up

Not enough votes to call it. On the specs, GPT-4.5 has the edge: bigger model tier, newer, bigger context window.

PaLM 2 Chat costs 300x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-4.5
Input
$75.00
Output
$150.00
PaLM 2 Chat
Input
$0.50
150× cheaper
Output
$0.50
300× cheaper

PaLM 2 Chat is cheaper on both: 150× input, 300× output.

Writing DNA

Style Comparison

Similarity
46%

GPT-4.5 uses 18.1x more headings

GPT-4.5
PaLM 2 Chat
63%Vocabulary63%
16wSentence Length16w
0.57Hedging0.77
4.7Bold3.4
6.4Lists1.3
0.00Emoji0.00
1.30Headings0.07
0.54Transitions0.27
Based on 11 + 9 text responses
Research

What we learned reading every model

FAQ

Common questions

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Same lab, same size, long tail

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Model pages

GPT-4.5 logo
GPT-4.526 outputs, specs and price
PaLM 2 Chat logo
PaLM 2 Chat22 outputs, specs and price
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