GPT-5.5
Model details
- Model
gpt-5.5- Provider
github-copilot- API
openai-responses- Base URL
https://api.individual.githubcopilot.com- Input
- text, image
- Reasoning
- Yes
- Context window
- 1,000,000
- Max tokens
- 128,000
Show configuration
{
"providers": {
"github-copilot": {
"apiKey": "YOUR_API_KEY",
"models": [
{
"id": "gpt-5.5",
"name": "GPT-5.5",
"reasoning": true,
"input": [
"text",
"image"
],
"thinkingLevelMap": {
"off": null,
"minimal": "low",
"xhigh": "xhigh"
},
"contextWindow": 1000000,
"maxTokens": 128000,
"cost": {
"input": 5,
"output": 30,
"cacheRead": 0.5,
"cacheWrite": 0,
"tiers": [
{
"inputTokensAbove": 272000,
"input": 10,
"output": 45,
"cacheRead": 1,
"cacheWrite": 0
}
]
}
}
],
"api": "openai-responses",
"baseUrl": "https://api.individual.githubcopilot.com"
}
}
}Pricing
USD per million tokens. A tier is selected from the total input tokens in each request and applies to that entire request.
| Request input | Input | Output | Cache read | Cache write |
|---|---|---|---|---|
| Up to 272,000 tokens | $5 | $30 | $0.5 | $0 |
| Above 272,000 tokens | $10 | $45 | $1 | $0 |
Session cost calculator
Estimate the requests made during an agent session. A user turn can make several model calls while using tools, so costs are calculated per model request.
Estimated session$0.00
- Uncached input
- —
- Cache reads
- —
- Uncached prefixes
- —
- Cache writes
- —
- Output
- —
- Without caching
- —
The first request starts cold unless marked otherwise. Output is billed separately from context growth because reasoning tokens are not always retained. This remains a directional estimate: providers differ in eligibility, rounding, and retention.
Compatibility flags
Effective values after applying Pi's API defaults and model overrides.
| Feature | Value |
|---|---|
supportsDeveloperRole | Yes |
sendSessionIdHeader | Yes |
supportsLongCacheRetention | Yes |