GPT-5.6 Luna in GitHub Copilot
OpenAI - Versatile
In GitHub Copilot, GPT-5.6 Luna costs $1 per 1M input tokens and $6 per 1M output tokens, billed as AI credits at $0.01 each. A typical daily-coding request works out to about 1.4 credits (about $0.01) with auto model selection on. Rates verified against GitHub's rate sheet on 2026-07-14.
Token rates
- Input / 1M
- $1.00
- Cached input / 1M
- $0.10
- Output / 1M
- $6.00
- Cost per credit
- $0.01
Requests above 200,000 input tokens bill at the long-context tier ($2.00 in / $9.00 out per 1M).
Credits per request
Defined workload baskets, not measured tasks, with auto model selection on.
| Workload | Credits (auto on) | Credits (auto off) | Cost |
|---|---|---|---|
| Short chat turn | 0.7 | 0.8 | $0.01 |
| Daily coding request | 1.4 | 1.6 | $0.01 |
| Agent session step | 4.7 | 5.3 | $0.05 |
At about 1.4 credits per daily-coding request, GPT-5.6 Luna ranks #9 of 22 current models by cost, about 4.9x the cheapest (GPT-5.4 nano).
Requests per plan allowance
Daily-coding requests the included monthly credits buy, before any overage.
| Plan | Credits / month | Requests |
|---|---|---|
| Copilot Pro | 1,500 | 1,068 |
| Copilot Pro+ | 7,000 | 4,985 |
| Copilot Max | 20,000 | 14,245 |
| Copilot Business | 1,900 | 1,353 |
| Copilot Enterprise | 3,900 | 2,777 |