Compare GPT-5.1 Codex (OpenAI) and GPT-5.1 Codex Mini (OpenAI) by price, context, capabilities, and latency.
Side by side
Compare price, provider, context, capabilities, latency, and source basis.
| Model | Provider | Input | Output | Context | Capabilities | Best for | Latency | Status | Source |
|---|---|---|---|---|---|---|---|---|---|
| GPT-5.1 Codexopenai/gpt-5.1-codex | OpenAI | $1.25 / 1M tokens | $10 / 1M tokens | 400k | StreamingTool callingJSON modeVision | image understanding, multimodal chat | 2044-3136ms | Catalog | Platform curated |
| GPT-5.1 Codex Miniopenai/gpt-5.1-codex-mini | OpenAI | $0.25 / 1M tokens | $2 / 1M tokens | 400k | StreamingTool callingJSON modeVision | image understanding, multimodal chat | 1491-2910ms | Catalog | Platform curated |
FAQ
GPT-5.1 Codex Mini is cheaper ($0.25 / 1M tokens input / $2 / 1M tokens output) vs GPT-5.1 Codex ($1.25 / 1M tokens input / $10 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.
Both offer the same context window: 400k tokens.
Both target Vision. Pick GPT-5.1 Codex Mini to optimize cost, or GPT-5.1 Codex for the longer context window. Test both on real prompts before committing production traffic.