OpenAI: GPT-5.1-Codex
OpenAI: GPT-5.1-Codex ranks #44 of 96 models by Artificial Analysis quality score (23.7) at $3.44/1M tokens blended - and ranks #223 of 404 by average real OpenRouter usage share over the trailing 125-day window (0.00%).
- Quality (Intelligence Index) - 23.7
- Coding index - -
- Agentic index - -
- Price (blended $/1M) - 3.44
- Context window - 400,000
- Usage rank - #223 of 404
- Providers - 0
- Open/closed - closed
Frequently asked questions
What is OpenAI: GPT-5.1-Codex's quality score?
OpenAI: GPT-5.1-Codex scores 23.7 on Artificial Analysis's Intelligence Index, ranking #44 of 96 models with a published score.
How much does OpenAI: GPT-5.1-Codex cost?
OpenAI: GPT-5.1-Codex costs $3.44 per 1M tokens (blended 75% prompt / 25% completion pricing).
Is OpenAI: GPT-5.1-Codex widely used?
OpenAI: GPT-5.1-Codex ranks #223 of 404 models by average real OpenRouter usage share, averaging 0.00% of classified token volume over the trailing 125-day window.
Is OpenAI: GPT-5.1-Codex open-weight or closed?
OpenAI: GPT-5.1-Codex is a closed-weight model.
Source: OpenRouter (openrouter.ai/rankings), as of November 7, 2026.
Benchmark scores: Artificial Analysis (artificialanalysis.ai) via OpenRouter (openrouter.ai/rankings).
Methodology: www.smophy.ai/benchmark/methodology
Token counts originate from each provider's own tokenizer and are not directly comparable across providers.