---
title: "GPT-6 Astra API pricing: ⁨$10⁩ in, ⁨$50⁩ out · DotsAgent"
description: "GPT-6 Astra by OpenAI: price per million input, cached and output tokens, context window, agent features and what a real agent task costs on it."
url: https://dotsagent.io/models/gpt-6-astra
---

[OpenAI](https://dotsagent.io/providers/openai)

· Flagship

# GPT-6 Astra API pricing and specs

OpenAI's most capable API model, with the full Responses API toolset: hosted shell, apply patch, skills, tool search, web and file search, computer use and remote MCP.

Input

$10

Cached input

$1

Output

$50

US dollars per million tokens, standard tier, short-prompt rate

Cache writes cost $12.50 per million. A separate Ultrafast tier runs at $60 input and $300 output, Fast mode doubles the price, and EU or other regional processing adds 10%. Astra has no 'none' reasoning setting and ignores custom temperature.

Prompts over 272K tokens are billed at $20 input, $2 cached and $75 output per million, and the higher rate applies to the whole request.

## Spec sheet

- **API model string**: `gpt-6-astra`
- **Provider**: [OpenAI](https://dotsagent.io/providers/openai)
- **Context**: 1.05M tokens
- **Max output**: 128K tokens
- **Released**: September 8, 2026
- **Batch API**: 50% off, results within hours
- **Documented agent features**: Tool callingStructured outputComputer useRemote MCPBuilt-in web searchAdjustable reasoning

## What a task costs

Four reference workloads priced at this model's list rates, with caching applied after the first call. Your numbers will differ; the calculator lets you change every assumption.

| Workload | Per task | Per 1,000 tasks |
| --- | --- | --- |
| Support bot 4 calls, short tool lookups | $0.280 | $280 |
| Coding agent 30 calls, files and test output | $9.89 | $9,887 |
| Browser agent 25 calls, screenshots and page text | $6.98 | $6,983 |
| Research agent 15 calls, long search results | $6.62 | $6,615 |

[Change the assumptions](https://dotsagent.io/cost#model=gpt-6-astra)

## Other OpenAI models

- [GPT-6.1 Sol](https://dotsagent.io/models/gpt-6-1-sol): $2 / $10

- [GPT-6 Luna](https://dotsagent.io/models/gpt-6-luna): $0.10 / $0.50

## Similar cost elsewhere

Models from other providers whose cost on the 30-step coding workload is closest to this one.

- [Claude Fable 5.1](https://dotsagent.io/models/claude-fable-5-1): $7.76 per coding task

- [Mistral Medium 3.5](https://dotsagent.io/models/mistral-medium-3-5): $5.31 per coding task

- [Claude Opus 5.5](https://dotsagent.io/models/claude-opus-5-5): $3.39 per coding task

- [Kimi K3](https://dotsagent.io/models/kimi-k3): $2.97 per coding task

## Sources

1. [developers.openai.com](https://developers.openai.com/api/docs/models/gpt-6-astra)/api/docs/models/gpt-6-astra
2. [developers.openai.com](https://developers.openai.com/api/docs/pricing)/api/docs/pricing
3. [developers.openai.com](https://developers.openai.com/api/docs/changelog)/api/docs/changelog

Independent reference for people who build AI agents. Not affiliated with any vendor named here.

© 2026 DotsAgent · Facts checked October 1, 2026