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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-5.1 Chat is 33ms faster than whisper
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
OpenAI: GPT-5.1 Chat is 194% faster
| Spec | whisper | OpenAI: GPT-5.1 Chat |
|---|---|---|
| Provider | openai | openai |
| Input price / 1M tokens | Free | Free |
| Output price / 1M tokens | — | — |
| Context window | — | 128k tokens |
| Latency (p50) | 50ms | 17ms |
| Best benchmark score | — | — |
| Open source | No | No |
Whisper is a general-purpose speech recognition model. It is trained on a large dataset of diverse audio and is also a multitasking model that can perform multilingual speech recognition, speech translation, and language identification.
GPT-5.1 Chat (AKA Instant is the fast, lightweight member of the 5.1 family, optimized for low-latency chat while retaining strong general intelligence. It uses adaptive reasoning to selectively “think” on...
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