GPT-5.1-chat pricing
GPT-5.1-chat, Flagship-tier from Azure OpenAI Service, costs $1.25 per 1M input tokens and $10.00 per 1M output tokens.
Input$1.25per 1M tokens
Output$10.00per 1M tokens
Context window—tokens
TierFlagshipAzure OpenAI Service
Price your own workload against GPT-5.1-chat in the calculator →
Specs and pricing
| Provider | Azure OpenAI Service |
| Tier | Flagship |
| Context window | — |
| Max output | — |
| Input price | $1.25 / 1M tokens |
| Output price | $10.00 / 1M tokens |
| Cache read | $0.125 / 1M tokens |
| Modalities | text |
Note. Global Standard tier; USD per 1M tokens as published.
What it costs at realistic volumes
Assuming a 4:1 input:output token ratio, a common shape for chat and RAG-style workloads:
| Volume (4:1 in:out ratio) | Input cost | Output cost | Total / month |
|---|---|---|---|
| 1,000,000 in / 250,000 out | $1.25 | $2.50 | $3.75 |
| 10,000,000 in / 2,500,000 out | $12.50 | $25.00 | $37.50 |
| 100,000,000 in / 25,000,000 out | $125.00 | $250.00 | $375.00 |
Cheaper alternatives
Same tier (Flagship), a different provider, and a lower blended cost at the 4:1 ratio used above:
| Model | Provider | $/1M in | $/1M out | At the 4:1 ratio |
|---|---|---|---|---|
| Qwen3 235B A22B Instruct 2507 | Novita AI | $0.09 | $0.58 | 93.7% cheaper blended |
| GPT-OSS 120B | Groq | $0.15 | $0.60 | 92% cheaper blended |
| Qwen3 235B-A22B (2507) | Parasail | $0.14 | $0.80 | 90.9% cheaper blended |
| Llama 4 Maverick | Together AI | $0.27 | $0.85 | 87.1% cheaper blended |
| Llama 4 Maverick Instruct | Novita AI | $0.27 | $0.85 | 87.1% cheaper blended |