Model Comparison
Comprehensive side-by-side analysis of model capabilities and performance

GPT-5 Codex
OpenAI
GPT-5 Codex is a language model developed by OpenAI. It achieves strong performance with an average score of 74.5% across 1 benchmarks. Notable strengths include SWE-Bench Verified (74.5%). Released in 2025, it represents OpenAI's latest advancement in AI technology.

o3
OpenAI
o3 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 67.5% across 22 benchmarks. It excels particularly in COLLIE (98.4%), AIME 2024 (91.6%), ARC-AGI (88.0%). It supports a 300K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.

o3
OpenAI
2025-04-16

GPT-5 Codex
OpenAI
2025-09-15
5 months newer
Performance Metrics
Context window and performance specifications

GPT-5 Codex

o3
Average performance across 1 common benchmarks

GPT-5 Codex

o3
Performance comparison across key benchmark categories

GPT-5 Codex

o3
o3
2024-05-31
GPT-5 Codex
2024-09-30
Provider Availability & Performance
Available providers and their performance metrics

GPT-5 Codex

o3
OpenAI

GPT-5 Codex

o3