GPT-5.3-Codex vs Llama 4 Scout
Compare GPT-5.3-Codex by OpenAI against Llama 4 Scout by Meta AI, context windows of 400K vs 10.0M, tested across 53 shared challenges. Updated May 2026.
Which is better, GPT-5.3-Codex or Llama 4 Scout?
GPT-5.3-Codex and Llama 4 Scout are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $0.25/M for Llama 4 Scout. Context windows: 400K vs 10000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.3-Codex and Llama 4 Scout
GPT-5.3-Codex is made by openai while Llama 4 Scout is from meta. GPT-5.3-Codex has a 400K token context window compared to Llama 4 Scout's 10000K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $0.25/M for Llama 4 Scout.
Per 1M tokens
Llama 4 Scout is cheaper on both — 7.0× input, 28× output
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, newer.
Llama 4 Scout is 28x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-5.3-Codex uses 15.8x more emoji
