Sharper GPT-5 generation for coding, product work, and tool-assisted tasks
GPT-5.1 by openai is offered by 31 providers on this page. Public prices are shown for 29 of them. Its official list price is $1.25 per 1M input tokens and $10.00 per 1M output tokens. The lowest paid channel is OpenCode Zen at $1.07 / $8.50 per 1M, about 1.3× below the list price. That channel is a third-party gateway, so confirm its availability and rate limits before depending on it.
Artificial Analysis rates it 37.5 on the Intelligence Index, with 49.4 for coding and 21.6 for agentic tasks. Against its lowest blended price of $2.93 per 1M, that is roughly 13 index points per dollar, which is the value ratio the leaderboards rank on. Median output speed is 94 tokens per second, with 35.4s to the first token. Running one task of the Artificial Analysis suite costs about $0.3040, which reflects how many tokens its reasoning consumes rather than the unit price alone.
The context window is 400,000 tokens at the reference host, but hosts report different limits, from 128,000 to 400,000, so the usable window depends on the provider you pick. It supports reasoning, tool use, and structured output. Accepted input modalities are Text, Image, PDF, and Audio. Providers report the capability flags inconsistently, so verify a specific feature against the host you plan to use. Its training knowledge cuts off at 2024-09-30.
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| OpenCode Zen | Gateway | $1.07 | $8.50 | $0.107 | — | 400,000 | 128,000 | |
| Poe | Gateway | $1.10 | $9.00 | $0.11 | — | 400,000 | 128,000 | |
| Jiekou.AI | Gateway | $1.13 | $9.00 | — | — | 400,000 | 128,000 | |
| NanoGPT | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| Impossibl | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| AIHubMix | Gateway | $1.25 | $10.00 | $0.13 | — | 400,000 | 128,000 | |
| OrcaRouter | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| Azure Cognitive Services | First-party | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| Pioneer | Gateway | $1.25 | $10.00 | $0.125 | $1.25 | 400,000 | 131,072 | |
| DevPass (LLM Gateway) | Gateway | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
| OpenAIOfficial | First-party | $1.25 | $10.00 | $0.125 | — | 400,000 | 128,000 | |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
2 / 31 providers expose no reasoning control (reasoning_options: []).