GPT-5.1 Codex mini
As of Oct 4, 2026, the cheapest GPT-5.1 Codex mini API price is $0.2 per 1M input tokens (Ofox) and $1.6 per 1M output tokens (Ofox). GPT-5.1 Codex mini is offered by 18 providers in the gpt-codex family, reasoning enabled.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| Provider | 1M input | 1M output | 1M cache read | 1M cache write | Context | Changed |
|---|---|---|---|---|---|---|
| Ofox | Cheapest$0.2 | Cheapest$1.6 | $0.024 | — | 256k | 16d agoout −20% |
| Poe | $0.22 | $1.8 | $0.022 | — | 400k | — |
| Jiekou.AI | $0.225 | $1.8 | — | — | 400k | — |
| AIHubMix | $0.25 | $2 | $0.025 | — | 400k | — |
| Azure | $0.25 | $2 | $0.025 | — | 400k | — |
| Azure Cognitive Services | $0.25 | $2 | $0.025 | — | 400k | — |
| Eden AI | $0.25 | $2 | $0.025 | — | 272k | — |
| Helicone | $0.25 | $2 | $0.025 | — | 400k | — |
| Impossibl | $0.25 | $2 | $0.025 | — | 400k | — |
| Kilo Gateway | $0.25 | $2 | $0.03 | — | 400k | — |
| DevPass (LLM Gateway) | $0.25 | $2 | $0.025 | — | 400k | — |
| LLM Gateway | $0.25 | $2 | $0.025 | — | 400k | — |
| NanoGPT | $0.25 | $2 | $0.025 | — | 400k | — |
| OpenCode Zen | $0.25 | $2 | $0.025 | — | 400k | — |
| OpenRouter | $0.25 | $2 | $0.03 | — | 400k | — |
| OrcaRouter | $0.25 | $2 | $0.025 | — | 400k | — |
| Vercel AI Gateway | $0.25 | $2 | $0.03 | — | 400k | — |
| ZenMux | $0.25 | $2 | $0.03 | — | 400k | — |
GPT-5.1 Codex mini pricing FAQ
What is the cheapest GPT-5.1 Codex mini API?
As of Oct 4, 2026, Ofox has the lowest GPT-5.1 Codex mini output price at $1.6 per 1M tokens, and Ofox has the lowest input price at $0.2 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How many providers offer GPT-5.1 Codex mini?
18 providers list GPT-5.1 Codex mini on Sovyron; 18 of them sell it at a metered per-token price.
Is GPT-5.1 Codex mini free?
No provider in the Sovyron catalog lists a free tier for GPT-5.1 Codex mini.
What is the context window of GPT-5.1 Codex mini?
GPT-5.1 Codex mini supports a 400k-token context window and up to 128k output tokens.