What is the difference between Claude Sonnet 4.5 and GPT-5 Codex?

Claude Sonnet 4.5 is developed by Anthropic while GPT-5 Codex is developed by OpenAI. in 245 community votes on Rival, Claude Sonnet 4.5 wins 70% of head-to-head matchups. These results are based on blind head-to-head voting across 42 challenges.

Which is better, Claude Sonnet 4.5 or GPT-5 Codex?

Based on 245 community votes on Rival, Claude Sonnet 4.5 wins 70% of head-to-head matchups against GPT-5 Codex. Claude Sonnet 4.5 is strongest in Web Design, Reasoning, Image Generation.

How are Claude Sonnet 4.5 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. 245 votes have been collected for this pair across 42 challenges. All vote data is part of Rival's open dataset.

What is the difference between Claude Sonnet 4.5 and GPT-5 Codex?

Claude Sonnet 4.5 is developed by Anthropic while GPT-5 Codex is developed by OpenAI. in 245 community votes on Rival, Claude Sonnet 4.5 wins 70% of head-to-head matchups. These results are based on blind head-to-head voting across 42 challenges.

Which is better, Claude Sonnet 4.5 or GPT-5 Codex?

Based on 245 community votes on Rival, Claude Sonnet 4.5 wins 70% of head-to-head matchups against GPT-5 Codex. Claude Sonnet 4.5 is strongest in Web Design, Reasoning, Image Generation.

How are Claude Sonnet 4.5 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. 245 votes have been collected for this pair across 42 challenges. All vote data is part of Rival's open dataset.