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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰OpenAI: GPT-4.1 is 100% cheaper than OpenAI: GPT-5 Codex
⚡OpenAI: GPT-4.1 is 18ms faster than OpenAI: GPT-5 Codex
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-4.1 is 100% faster
| Spec | OpenAI: GPT-4.1 | OpenAI: GPT-5 Codex |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | $1.25 |
| Output price / 1M tokens | — | $10.00 |
| Context window | 1048k tokens | 400k tokens |
| Latency (p50) | 18ms | 36ms |
| Best benchmark score | — | — |
| Open source | No | No |
GPT-4.1 is a flagship large language model optimized for advanced instruction following, real-world software engineering, and long-context reasoning. It supports a 1 million token context window and outperforms GPT-4o and...
GPT-5-Codex is a specialized version of GPT-5 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
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