GPT-5.6 Luna
Fastest, most affordable GPT-5.6 tier — outperforms Claude Opus 4.8 on the Coding Agent Index at roughly a quarter of the cost.
Capabilities
Pricing
| Input | $1 / 1M tokens |
| Cached input | $0.1 / 1M tokens |
| Cache write | $1.25 / 1M tokens |
| Output | $6 / 1M tokens |
| Web search (when used) | $10 / 1,000 calls |
Provider-equivalent rates used for credits. Higher reasoning effort can consume more output tokens; it has no separate fixed multiplier. One credit equals 1¢, with a one-credit minimum per completed run and the aggregate rounded up once.
Provider pricing source · verified 2026-07-20
GPT-5.6 Luna: frequently asked questions
- What is GPT-5.6 Luna?
- Fastest, most affordable GPT-5.6 tier — outperforms Claude Opus 4.8 on the Coding Agent Index at roughly a quarter of the cost. You can try GPT-5.6 Luna on TryAI without a separate provider account.
- How much does GPT-5.6 Luna cost on TryAI?
- GPT-5.6 Luna uses these provider-equivalent rates: Input: $1 / 1M tokens, Cached input: $0.1 / 1M tokens, Cache write: $1.25 / 1M tokens, Output: $6 / 1M tokens, Web search (when used): $10 / 1,000 calls. One TryAI credit equals one cent of usage; completed runs have a one-credit minimum and the aggregate cost is rounded up once.
- What can GPT-5.6 Luna do?
- GPT-5.6 Luna supports Streaming, Reasoning, Tool use, Web search, Vision, Documents with a context window of about 1.1M tokens.
- How do I try GPT-5.6 Luna?
- Create a free TryAI account, pick GPT-5.6 Luna from the model selector, and start generating in seconds.
Related models
Claude Opus 5
Chat & reasoning
Anthropic's everyday flagship for complex agentic coding and enterprise work. Ranks first overall on the AA Intelligence Index v4.1 at 61 with max effort.
Try Claude Opus 5→Claude Fable 5
Chat & reasoning
Anthropic's highest-capability model for the hardest reasoning and long-horizon agentic work. Scores 60 on the AA Intelligence Index v4.1, just behind Opus 5 at max effort.
Try Claude Fable 5→GPT-5.6 Sol
Chat & reasoning
OpenAI's new flagship. AA Intelligence Index v4.1 of 58.9 and a new state of the art on the Coding Agent Index (80) — the top performance-per-dollar frontier model, with an `ultra` multi-agent mode for the hardest work.
Try GPT-5.6 Sol→