What is the difference between DeepSeek R1 and GPT-5 Codex?

DeepSeek R1 is developed by DeepSeek while GPT-5 Codex is developed by OpenAI. in 2 community votes on Rival, GPT-5 Codex wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 50 challenges.

Which is better, DeepSeek R1 or GPT-5 Codex?

Based on 2 community votes on Rival, GPT-5 Codex wins 100% of head-to-head matchups against DeepSeek R1. GPT-5 Codex is strongest in Conversation.

How are DeepSeek R1 vs GPT-5 Codex votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 50 challenges. All vote data is part of Rival's open dataset.

What is the difference between DeepSeek R1 and GPT-5 Codex?

DeepSeek R1 is developed by DeepSeek while GPT-5 Codex is developed by OpenAI. in 2 community votes on Rival, GPT-5 Codex wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 50 challenges.

Which is better, DeepSeek R1 or GPT-5 Codex?

Based on 2 community votes on Rival, GPT-5 Codex wins 100% of head-to-head matchups against DeepSeek R1. GPT-5 Codex is strongest in Conversation.

How are DeepSeek R1 vs GPT-5 Codex votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 50 challenges. All vote data is part of Rival's open dataset.

DeepSeek R1 vs GPT-5 Codex: Which Is Better?

Updated Sep 2025

Our Verdict

GPT-5 CodexWinner

DeepSeek R1Runner-up

Pick GPT-5 Codex. In 2 blind votes, GPT-5 Codex wins 100% of the time. That's not luck.

GPT-5 Codex particularly excels in Conversation.

Clear winner

API pricing

Cost per 1M tokens

DeepSeek R1

Input

$0.55

Output

$2.19

GPT-5 Codex

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

47%

DeepSeek R1 uses 5.1x more transitions

DeepSeek R1

GPT-5 Codex

62%Vocabulary64%

15wSentence Length17w

0.52Hedging0.38

8.0Bold2.3

5.7Lists3.5

0.04Emoji0.15

0.62Headings0.49

0.28Transitions0.05

Based on 22 + 13 text responses

Research

What we learned reading every model

DeepSeek R1 and GPT-5 Codex have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek R1 vs MiniMax M3New provider

DeepSeek R1 vs Grok 3New provider

DeepSeek R1 vs Llama 4 MaverickNew provider

Updated Sep 2025

Our Verdict

GPT-5 CodexWinner

DeepSeek R1Runner-up

Pick GPT-5 Codex. In 2 blind votes, GPT-5 Codex wins 100% of the time. That's not luck.

GPT-5 Codex particularly excels in Conversation.

Clear winner

API pricing

Cost per 1M tokens

DeepSeek R1

Input

$0.55

Output

$2.19

GPT-5 Codex

Input

—

Output

—

Writing DNA

Style Comparison

Similarity

47%

DeepSeek R1 uses 5.1x more transitions

DeepSeek R1

GPT-5 Codex

62%Vocabulary64%

15wSentence Length17w

0.52Hedging0.38

8.0Bold2.3

5.7Lists3.5

0.04Emoji0.15

0.62Headings0.49

0.28Transitions0.05

Based on 22 + 13 text responses

Research

What we learned reading every model

DeepSeek R1 and GPT-5 Codex have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek R1 vs MiniMax M3New provider

DeepSeek R1 vs Grok 3New provider

DeepSeek R1 vs Llama 4 MaverickNew provider