GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning to allocate computation dynamically, responding quickly to simple queries while spending more depth on complex tasks. The model produces clearer, more grounded explanations with reduced jargon, making it easier to follow even on technical or multi-step problems.
Built for broad task coverage, GPT-5.1 delivers consistent gains across math, coding, and structured analysis workloads, with more coherent long-form answers and improved tool-use reliability. It also features refined conversational alignment, enabling warmer, more intuitive responses without compromising precision. GPT-5.1 serves as the primary full-capability successor to GPT-5
| $1.25 | $10.00 | $0.13 | 1.95s | 49 tps | ||
| $1.25 | $10.00 | $0.125 | 1.26s | 48 tps | ||
Standard ルーティングでは使用されません:これらのエンドポイントが使用されない理由 | ||||||
Flex | $0.625 | $5.00 | $0.0625 | 0.67s | 157 tps | |
| $1.375 | $11.00 | $0.143 | 1.42s | 80 tps | ||
Fast | $2.50 | $20.00 | $0.25 | 0.77s | 103 tps | |
P50、プロバイダー全体での最良値
P50、最適なプロバイダー
上流のプロバイダーでエラーが発生した場合、リクエストフィルターが許可していれば、別の正常なプロバイダーにルーティングして復旧できます。プロバイダーごとの稼働率データにプログラムでアクセスするには Endpoints APIを利用できます。詳しくは、 負荷分散とプロバイダールーティングのオプションをご覧ください。