GPT-5.1-Codex vs Llama 4 Maverick
Compare GPT-5.1-Codex by OpenAI against Llama 4 Maverick by Meta AI, context windows of 400K vs 1.0M, tested across 52 shared challenges. Updated May 2026.
Which is better, GPT-5.1-Codex or Llama 4 Maverick?
GPT-5.1-Codex and Llama 4 Maverick are both competitive models. GPT-5.1-Codex costs $1.25/M input tokens vs $1.5/M for Llama 4 Maverick. Context windows: 400K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5.1-Codex and Llama 4 Maverick
GPT-5.1-Codex is made by openai while Llama 4 Maverick is from meta. GPT-5.1-Codex has a 400K token context window compared to Llama 4 Maverick's 1000K. On pricing, GPT-5.1-Codex costs $1.25/M input tokens vs $1.5/M for Llama 4 Maverick.
Per 1M tokens
GPT-5.1-Codex wins input (1.2× cheaper)·Llama 4 Maverick wins output (4.0× cheaper)
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Llama 4 Maverick is 4.0x cheaper per token — worth considering if cost matters.
Style Comparison
GPT-5.1-Codex uses 3.4x more transitions
