List price
Input / 1M$0.050Output / 1M$0.40Cache read / 1M$0.005Blended$0.313Value index—Last move—
models.dev · MIT · retrieved Oct 23, 2026
OpenAI
GPT-5 Nano
GPT-5 Nano is listed by OpenAI at $0.05 input and $0.4 output per million tokens. The recorded context window is 400,000 tokens. Release date on file: 2025-08-07. LMArena's text board published 2026-10-20 gives it an overall rating of 1319.8 (rank 233, 8,135 votes). Price source: models.dev (MIT).
- Context38
- Inverse price100
- Arena48
- GPQA—
- Tools100
- Modalities50
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 | 1319.8 | rank 233 · 8,135 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena coding | 1350.9 | rank 226 · 1,665 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena math | 1317.4 | rank 226 · 494 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| GPQA Diamond | — | — | — |
| LiveBench | — | — | — |
| SWE-bench Verified | — | — | — |
| Epoch Capability Index | 139.21 | 134.11–141.2 | 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 | $0.050 | $0.40 | $0.313 | models.dev · MIT |
| Also listed | Merge Gateway | $0.050 | $0.40 | $0.313 | models.dev · MIT |
| Also listed | Impossibl | $0.050 | $0.40 | $0.313 | models.dev · MIT |
| Also listed | AI/ML API | $0.050 | $0.40 | $0.313 | models.dev · MIT |
| LiteLLM | openai | $0.050 | $0.40 | $0.313 | LiteLLM model_prices_and_context_window.json · MIT |
Spec
Context400,000Max output128,000Inputtext, imageOutputtextReleased2025-08-07Open weightsNo
Spec fields are from the models.dev row for OpenAI.