GPT-5.3 Codex
Context
n/a
Max output
n/a
Serving providers
0
Cheapest input
n/a /1M
Benchmarks
independent evaluations · source: Artificial AnalysisSpeed & latency
Output speed
93 t/s
tokens / second
Time to first token
52.44s
latency
Headline indices
Individual benchmarks · click a row for effort variants
| Benchmark | Best score | Effort | Cost / task | |
|---|---|---|---|---|
| CritPt | 17% | default | — | |
| GPQA Diamond | 92% | default | — | |
| Humanity's Last Exam | 40% | default | — | |
| IFBench | 75% | default | — | |
| Long-Context Reasoning | 74% | default | — | |
| MMMU-Pro | 79% | default | — | |
| Omniscience | 9.9 | default | — | |
| SciCode | 53% | default | — | |
| TerminalBench Hard | 53% | default | — | |
| τ²-bench | 86% | default | — |
Pricing by serving provider
availabilityNo public price yet. Not offered on-demand at any tracked provider.
Price history
input + output $/1M since we started tracking Input Output
Price history is accruing. We record a point each day a price changes; the full backfill lands shortly.
Other OpenAI models
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