GPT 6 Astra in Pro reasoning mode. Uses additional model work for difficult tasks, with higher latency and token usage at the same per-token rates. Reasoning effort remains independently configurable.
GPT 6 Astra Pro by openai is offered by 3 providers on this page. Its reference price is $10.00 per 1M input tokens and $50.00 per 1M output tokens.
The context window is 1,050,000 tokens, with an output limit of 128,000 tokens. It supports reasoning, tool use, and structured output. Accepted input modalities are Text, Image, and PDF.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NanoGPT | Gateway | $10.00 | $50.00 | $1.00 | $12.50 | 1,050,000 | 128,000 | |
| OpenRouter | Gateway | $10.00 tiered >272K: $20.00 | $50.00 | $1.00 | $12.50 | 1,050,000 | 128,000 | |
| Kilo Gateway | Gateway | $10.00 | $50.00 | $1.00 | $12.50 | 1,050,000 | 128,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Price history accumulates from each data sync; currently only 1 sample(s) (2026-09-05). Each future sync adds a point, and once accumulated a line is drawn here.