OpenAI
GPT-5 API
OpenAI's GPT-5 line, priced per million tokens, with a near eightfold spread.
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シリーズ内のモデル数
The GPT-5 line covers OpenAI's general-purpose models, and the four tiers we serve are separated mainly by how much reasoning you are paying for. All of them speak the OpenAI protocol, so they are drop-in for existing OpenAI client code, and all support prompt caching — cached input is billed at a tenth of fresh input, which is the single biggest lever on cost for repeated system prompts.
概要
- 最低料金
- $0.195 / 100万トークン
このファミリーのモデル
| モデル | 最低料金 | モード | 開く |
|---|---|---|---|
| GPT 5.6 LunaFast, cost-efficient model of the GPT-5.6 series. Suited for high-volume, latency-sensitive chat, classification and lightweight agentic workflows. | $0.195/ 100万トークン | — | 開くドキュメント |
| GPT 5.6 TerraHigh-capability GPT-5.6 model for long-context, tool-enabled workflows across writing, coding, analysis and multi-step problem solving. Text, image and file input. | $0.6/ 100万トークン | — | 開くドキュメント |
| GPT 5.5Broadly capable GPT-5.5 model for everyday reasoning, coding and writing. | $1.08/ 100万トークン | — | 開くドキュメント |
| GPT 5.6 SolFrontier model of the GPT-5.6 series for the hardest reasoning, coding and agentic tasks. Text, image and file input, 1M-token context. | $1.5/ 100万トークン | — | 開くドキュメント |
料金
| モデル | オプション | 料金 |
|---|---|---|
| GPT 5.6 Luna | input | $0.195/ 100万トークン |
| GPT 5.6 Luna | output | $1.17/ 100万トークン |
| GPT 5.6 Luna | cacheRead | $0.019/ 100万トークン |
| GPT 5.6 Luna | cacheWrite | $0.243/ 100万トークン |
| GPT 5.6 Terra | input | $0.6/ 100万トークン |
| GPT 5.6 Terra | output | $3.6/ 100万トークン |
| GPT 5.6 Terra | cacheRead | $0.06/ 100万トークン |
| GPT 5.6 Terra | cacheWrite | $0.75/ 100万トークン |
| GPT 5.5 | input | $1.08/ 100万トークン |
| GPT 5.5 | output | $6.47/ 100万トークン |
| GPT 5.5 | cacheRead | $0.108/ 100万トークン |
| GPT 5.6 Sol | input | $1.5/ 100万トークン |
| GPT 5.6 Sol | output | $9/ 100万トークン |
| GPT 5.6 Sol | cacheRead | $0.15/ 100万トークン |
| GPT 5.6 Sol | cacheWrite | $1.88/ 100万トークン |
どれを選ぶか
GPT 5.6 Luna
High-volume, latency-sensitive work — chat, classification, light agentic steps. Roughly an eighth of Sol's input price.
GPT 5.6 Terra
Long-context, tool-enabled workflows across writing, coding and analysis. The middle of the line.
GPT 5.5
The previous generation, for everyday reasoning, coding and writing.
GPT 5.6 Sol
The hardest reasoning, coding and agentic tasks, with a 1M-token context and file input.
強み
- Cached input is billed at one tenth of fresh input on every tier, which pays back immediately on a fixed system prompt.
- One protocol across the whole line — moving between tiers is a model-name change.
- Sol carries a 1M-token context, so long documents do not need chunking.
- Luna makes high-volume classification and extraction genuinely cheap within the same family.
制限
- Output tokens cost roughly six times input on every tier, so verbose responses dominate the bill.
- Only the 5.6 tiers offer cache writes; on 5.5 you pay full price to populate the cache.
- Text-only in and out here — image and video generation come from other families.
提供元によるこのシリーズの説明: OpenAI — models