#blog-server-fallback{display:block}.blog-fallback{max-width:1120px;margin:0 auto;padding:48px 24px;font-family:system-ui,-apple-system,sans-serif;color:#171717}.blog-fallback a{color:inherit}.blog-fallback__header{margin-bottom:32px}.blog-fallback__header h1,.blog-fallback__postHeader h1{font-size:clamp(2.4rem,7vw,5.5rem);line-height:1;margin:18px 0}.blog-fallback__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.blog-fallback__card{border:1px solid #ddd;border-radius:18px;overflow:hidden}.blog-fallback__card img,.blog-fallback--post figure img{display:block;width:100%;height:auto}.blog-fallback__cardBody{padding:20px}.blog-fallback__card h2{font-size:1.35rem}.blog-fallback__eyebrow,.blog-fallback__meta{color:#666;font-size:.875rem}.blog-fallback__lead{font-size:1.25rem;color:#555}.blog-fallback--post{max-width:880px}.blog-fallback__content{font-size:1.05rem;line-height:1.8}.blog-fallback__content pre{overflow:auto;padding:16px;background:#111;color:#eee;border-radius:12px}.blog-fallback__content img{max-width:100%;height:auto}.blog-fallback__pagination{display:flex;justify-content:center;gap:20px;margin-top:36px}

Text and reasoning

gpt-5.3-codex

gpt-5.3-codex

Officially integrated Text model

Billing

Token billing: input 1.75 points / 1M tokens, output 14.00 points / 1M tokens.

Available groups

High Quality、default、Official、Cost-Effective、Budget Group、GPT Special Offer

Model API access provided by CAI API.