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OpenAI o3 vs PaLM 2 Chat: Which Is Better? [2026 Comparison]
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  1. Home
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  3. OpenAI o3 vs PaLM 2 Chat
Updated Apr 16, 2025

OpenAI o3 vs PaLM 2 Chat

Compare OpenAI o3 by OpenAI against PaLM 2 Chat by Google AI, tested across 17 shared challenges. Updated April 2026.

Which is better, OpenAI o3 or PaLM 2 Chat?

OpenAI o3 and PaLM 2 Chat are both competitive models. OpenAI o3 costs $10/M input tokens vs $0.5/M for PaLM 2 Chat. Compare their real outputs side by side below.

Key Differences Between OpenAI o3 and PaLM 2 Chat

OpenAI o3 is made by openai while PaLM 2 Chat is from google. On pricing, OpenAI o3 costs $10/M input tokens vs $0.5/M for PaLM 2 Chat.

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OpenAI o3vsPaLM 2 Chat

17 fights queued

OpenAI o3 logo

Why OpenAI o3?

21 months newerApr 2025
PaLM 2 Chat logo

Why PaLM 2 Chat?

56x cheaper overall$0.50/M in · $0.50/M out
OpenAI o3PaLM 2 Chat
Input price
$10.00/M
$0.50/M
Output price
$40.00/M
$0.50/M
Context
—
8K
Released
Apr 2025
Jul 2023

Favorites

OpenAI o3PaLM 2 Chat
Movie
Blade Runner

Blade Runner

19827.9
—
City
Kyoto

Kyoto

Japan
—
12 / 17
01

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

OpenAI o3

OpenAI o3

Openai · Apr 2025text

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. How much data was seen during training
OpenAI reports that the model was trained on about 300 billion tokens (3 × 10¹¹).

Step 3. How many floating-point operations does one parameter cost per token?
A practical rule of thumb for Transformer language models is
 Training FLOPs ≈ 6 × (# parameters) × (# training tokens)

Where does the factor 6 come from?

• Forward pass: every parameter is involved in one multiply-accumulate → 2 FLOPs
• Back-prop gradient computation: roughly another 2 FLOPs
• Parameter-update (optimizer) and miscellaneous overhead: ≈2 FLOPs
Total ≈6 FLOPs per parameter per token.

Step 4. Plug in the numbers
Total FLOPs = 6 × (1.75 × 10¹¹) × (3 × 10¹¹)
      = 6 × 5.25 × 10²²
      ≈ 3.15 × 10²³ FLOPs.

Step 5. Express the answer in more familiar units
3.15 × 10²³ ≈ 315 zettaFLOPs (1 ZFLOP = 10²¹ FLOPs).

Step 6. Sanity check with hardware-time intuition
An NVIDIA A100 delivers ≈ 312 teraFLOP/s (0.312 PFLOP/s) in mixed precision.
Wall-clock time on a single A100:
 3.15 × 10²³ / 3.12 × 10¹⁴ ≈ 1.0 × 10⁹ s ≈ 32 years.
Running on 1,000 A100s in parallel would take ≈12 days, which is the right ballpark for a large industrial training run.

Final estimate
Training GPT-3 (175 B parameters, 300 B tokens) requires on the order of 3 × 10²³ floating-point operations, i.e. roughly 300 zettaFLOPs.

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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023text

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. Here's a step-by-step explanation of the reasoning:
Step 1: Determine the number of parameters in GPT-3

GPT-3 is a massive language model with 175 billion parameters. Each parameter represents a trainable weight in the neural network, and updating these weights during training requires floating-point operations (FLOPs).

Step 2: Estimate the number of training iterations

The number of training iterations refers to how many times the entire training dataset is passed through the neural network during the training process. Although the exact number may vary, let's assume that GPT-3 was trained for 100 epochs.

Step 3: Calculate the FLOPs per iteration

During each training iteration, the neural network performs forward and backward passes. The forward pass involves computing the output of the network given the input, while the backward pass involves calculating the gradients of the loss function with respect to the network's weights.
For simplicity, we can assume that the forward and backward passes have roughly the same number of FLOPs. Therefore, the total FLOPs per iteration can be estimated by multiplying the number of parameters by 2 (forward and backward passes).

Total FLOPs per iteration = (Number of parameters) x 2

(175 billion parameters) x 2 = 350 billion FLOPs per iteration

Step 4: Calculate the total FLOPs for training

Multiplying the FLOPs per iteration by the number of training iterations gives us the total FLOPs required to train GPT-3.

Total FLOPs for training = (FLOPs per iteration) x (Number of iterations)

(350 billion FLOPs per iteration) x (100 iterations) = 35 trillion FLOPs for training

Therefore, based on these assumptions, we estimate that training GPT-3 without searching online would require approximately 35 trillion FLOPs.

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2 / 17
02

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

OpenAI o3

OpenAI o3

Openai · Apr 2025svg
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023svg
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3 / 17
03

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

OpenAI o3

OpenAI o3

Openai · Apr 2025text

Let
• S = number of sisters in the family (girls)
• B = number of brothers in the family (boys)

Given

  1. Sally has 3 brothers ⇒ B = 3.
  2. Each brother has 2 sisters ⇒ every boy sees exactly 2 girls in the sibling group.
    Therefore S = 2.

Since Sally herself is one of those 2 sisters, the number of sisters Sally has (other than herself) is

2 – 1 = 1.

Sally has 1 sister.

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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023text

Sally has 2 sisters.

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4 / 17
04

Math Misconception Testreasoning

Tests an AI's understanding of number representation

OpenAI o3

OpenAI o3

Openai · Apr 2025text

No.
Think of 9.9 as 9.90; since 0.11 < 0.90, we have 9.11 < 9.9.

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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023text

9.11 is less than 9.9.

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5 / 17
05

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

OpenAI o3

OpenAI o3

Openai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
6 / 17
06

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

OpenAI o3

OpenAI o3

Openai · Apr 2025svg
Nothing here. The model returned empty. We stared at it for a while.
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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023svg
Nothing here. The model returned empty. We stared at it for a while.
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Sponsored
7 / 17
07

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

OpenAI o3

OpenAI o3

Openai · Apr 2025website
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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
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8 / 17
08

Pokémon Battle UI Recreationweb design

Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.

OpenAI o3

OpenAI o3

Openai · Apr 2025website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
Nothing here. The model returned empty. We stared at it for a while.
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9 / 17
09

Linear App Cloneweb design

Tests an AI's ability to replicate an existing UI with Tailwind CSS

OpenAI o3

OpenAI o3

Openai · Apr 2025website
Nothing here. The model returned empty. We stared at it for a while.
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PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
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10 / 17
10

Framer-Style Animationweb design

Tests an AI's ability to create smooth web animations

OpenAI o3

OpenAI o3

Openai · Apr 2025website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
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11 / 17
11

Dark Mode Dashboardweb design

Tests an AI's UI design skills with theming support

OpenAI o3

OpenAI o3

Openai · Apr 2025website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
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12 / 17
12

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

OpenAI o3

OpenAI o3

Openai · Apr 2025website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
PaLM 2 Chat

PaLM 2 Chat

Google · Jul 2023website
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote

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Our Verdict
OpenAI o3
OpenAI o3
PaLM 2 Chat
PaLM 2 ChatRunner-up

No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer.

PaLM 2 Chat is 80x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

OpenAI o3 uses 5.3x more headings

OpenAI o3
PaLM 2 Chat
68%Vocabulary63%
14wSentence Length16w
0.26Hedging0.77
0.7Bold3.4
3.0Lists1.3
0.00Emoji0.00
0.38Headings0.07
0.12Transitions0.27
Based on 16 + 9 text responses
vs

Ask them anything yourself

OpenAI o3PaLM 2 Chat

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%
Read the full reportor download the 14-slide PDF

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
Download the free previewor get all 58 slides for $49
FAQ

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PaLM 2 Chat logoMiniMax M2.5 logo

We compare AI models for a living. On purpose. We chose this.

@rival_tips

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© 2026 Rival · Built at hours no one should be awake, on hardware we don't own
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