Cheapest GPT-5 family tier for classification, routing, and ultra-high QPS text jobs. Use when Mini is still too expensive and Exact OpenAI counts matter for budgeting.
Privacy first counting
TokenCALC counts tokens in your browser when an Exact encoding is available. Prompt text does not need to leave your device for local counting.
Pricing snapshot
USD per 1 million tokens. Verify against the provider source before you lock budget.
| Rate | USD |
|---|---|
| Input / 1M | $0.050 |
| Output / 1M | $0.400 |
| Cached input / 1M | $0.0050 |
| Batch input / 1M | $0.025 |
| Batch output / 1M | $0.200 |
Model details
| Detail | Value |
|---|---|
| Provider | OpenAI |
| Context window | 128K |
| Tokenizer | Exact (o200k_base) |
| Last verified | 2026-08-02 |
| API model id | gpt-5-nano |