gpt-5.3-codex (gpt-5.3-codex) is a chat model from openai with a 272K-token context window; capabilities tools, vision, reasoning; input image, pdf, text; output text.
272KContext
128KMax output
$1.75$ / 1M in
44.3Intelligence
115.634tok / s
Pricing
Input
$1.75 / 1M tokens
Output
$14 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-07-22.
Benchmarks
Intelligence index
44.3
Cited from a public third-party leaderboard — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-07-22.
Performance
Throughput
115.634 tokens/s
Latency (TTFT)
41.56 s
Cited speed metrics — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-07-22.