Comparisons
GPT 5.6 Luna vs Claude Sonnet 5
Side-by-side pricing and capabilities on the API Hubs API — one key, one prepaid balance.
What 10M input tokens cost
GPT 5.6 Luna
1.80 coins
0.18 coins input price per 1M tokens
Claude Sonnet 5
3.00 coins
0.3 coins input price per 1M tokens
GPT 5.6 Luna costs 1.20 coins less per 10M input tokens — 40% cheaper than Claude Sonnet 5. Both are billed from the same prepaid balance, so switching costs nothing.
Side by side
| Attribute | GPT 5.6 Luna | Claude Sonnet 5 |
|---|---|---|
| Type | Chat | Chat |
| Provider | OpenAI | Anthropic |
| Starting price | 0.18 coins input price per 1M tokens | 0.3 coins input price per 1M tokens |
| 10M input tokens | 1.80 coins | 3.00 coins |
| Price options | 4 | 4 |
| Parameters | 0 | 0 |
| Capabilities | — | — |
| Details | View GPT 5.6 Luna → | View Claude Sonnet 5 → |
Frequently asked questions
Which is cheaper, GPT 5.6 Luna or Claude Sonnet 5?
GPT 5.6 Luna is the cheaper of the two: 0.18 coins against 0.3 coins per 1M input tokens. Both are usage-based, so you pay per request with no subscription and no minimum.
What do GPT 5.6 Luna and Claude Sonnet 5 cost for 10M input tokens?
10M input tokens cost 1.80 coins on GPT 5.6 Luna and 3.00 coins on Claude Sonnet 5 — a difference of 1.20 coins, or 40% less on GPT 5.6 Luna. Both draw on the same prepaid balance.
What can GPT 5.6 Luna do that Claude Sonnet 5 cannot?
Their published capabilities match, so the practical differences between GPT 5.6 Luna and Claude Sonnet 5 are price and the parameters each accepts.
Can I switch between GPT 5.6 Luna and Claude Sonnet 5?
Yes. Both run behind the same API Hubs endpoint, so switching means changing the model field in the request body. The same API key and the same prepaid balance cover both, and there is nothing else to migrate.