List price
Input / 1M$1.75Output / 1M$14.00Cache read / 1M$0.18Blended$10.938Value index—Last move—
models.dev · MIT · retrieved Oct 24, 2026
OpenAI
GPT-5.3 Codex
GPT-5.3 Codex is listed by OpenAI at $1.75 input and $14 output per million tokens. The recorded context window is 400,000 tokens. Release date on file: 2026-02-05. No LMArena overall rating was matched for this name, so it is left out of the Value Index. Price source: models.dev (MIT).
- Context38
- Inverse price98
- Arena—
- GPQA—
- Tools100
- Modalities67
Price history
Input and output list price. A missing day stays a gap in the line. The series is not a quality history.
Benchmarks
LMArena is CC-BY-4.0. Epoch scores, including LiveBench where Epoch publishes it, are CC-BY-4.0. A blank cell means this snapshot has no match. Nothing here is estimated.
| Benchmark | Score | Detail | Source |
|---|---|---|---|
| LMArena overall | — | — | — |
| LMArena coding | — | — | — |
| LMArena math | — | — | — |
| GPQA Diamond | — | — | — |
| LiveBench | — | — | — |
| SWE-bench Verified | 74.8% | — | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
| Epoch Capability Index | 157.09 | 153.56–161.38 | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
Provider prices
The list row is the price used for the value index. Other rows are the same model id on models.dev, plus the LiteLLM catalog price when we have one. A split quote is kept beside the list price.
| Quote | Provider | Input / 1M | Output / 1M | Blended | Source |
|---|---|---|---|---|---|
| List | OpenAI | $1.75 | $14.00 | $10.938 | models.dev · MIT |
| Also listed | Impossibl | $1.75 | $14.00 | $10.938 | models.dev · MIT |
| Also listed | AI/ML API | $3.70 | $29.62 | $23.144 | models.dev · MIT |
| Also listed | NanoGPT | $1.75 | $14.00 | $10.938 | models.dev · MIT |
| LiteLLM | openai | $1.75 | $14.00 | $10.938 | LiteLLM model_prices_and_context_window.json · MIT |
Spec
Context400,000Max output128,000Inputtext, image, pdfOutputtextReleased2026-02-05Open weightsNo
Spec fields are from the models.dev row for OpenAI.