GPT-5.1
The cheapest provider for GPT-5.1 is OpenAI at $1.72 per 1M tokens (blended), charging $0.625 per 1M input and $5.00 per 1M output tokens. 2 providers serve it; the most expensive charges 4.0× as much. Context window: 400K tokens. Prices tracked since Oct 3, 2026.
Best price
$1.72
at OpenAI
Input / output
$0.625 / $5.00
per 1M tokens
Providers
2
4.0× spread
7 days
—
best price
30 days
—
best price
Context
400K
tokens
Providers
Active offers ranked by blended price. Bars are relative to the most expensive.
| Provider | Input | Output | Blended | vs cheapest | Context | Uptime 1d | Price since |
|---|---|---|---|---|---|---|---|
| $0.625 | $5.00 | $1.72 | best | ||||
| $1.25 | $10 | $3.44 | +100% | ||||
| $1.25 | $10 | $3.44 | +100% | ||||
Azureswedencentral | $1.375 | $11 | $3.78 | +120% | |||
OpenAIfast | $2.50 | $20 | $6.875 | +300% |
- OpenAICheapestflex$1.72$0.625 in · $5.00 outbest400K ctx100% uptime
- $3.44$1.25 in · $10 out+100%400K ctx100% uptime
- $3.44$1.25 in · $10 out+100%400K ctx100% uptime
- swedencentral$3.78$1.375 in · $11 out+120%400K ctx100% uptime
- fast$6.875$2.50 in · $20 out+300%400K ctx100% uptime
Blended = (3 × input + output) / 4.
Price history
Hover to compare providers at any point in time. Click a legend item to hide it.
USD per 1M tokens · each step is a price change
Not enough history yet
Tracking since Oct 3, 2026. The chart fills in as new crawls arrive every 6 hours.
Other pricing
Cache, reasoning and per-call fees. Token rates per 1M; others per unit.
| Offered by | Cache read | Web search |
|---|---|---|
| OpenAI (flex) | $0.0625 | $0.01 |
| Azure | $0.13 | $0.01 |
| OpenAI | $0.125 | $0.01 |
| Azure (swedencentral) | $0.143 | $0.01 |
| OpenAI (fast) | $0.25 | $0.01 |
Change log
Every recorded change for this model since Oct 3, 2026.
No changes yet
Tracking since Oct 3, 2026. Price changes, new providers and delistings will show up here.
About this model
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...
- Released
- Nov 13, 2025
- First tracked
- Oct 3, 2026
- Canonical slug
- openai/gpt-5.1-20251113