---
title: "OpenAI: GPT-6 Astra Pro — unrated, priced in this catalogue · Undominated.ai"
canonical: https://undominated.ai/models/openai__gpt-6-astra-pro/
description: "OpenAI: GPT-6 Astra Pro: $10.00/M in, $50.00/M out. No independent quality score in this catalogue — unrated, not ranked, not scored zero."
---

# OpenAI: GPT-6 Astra Pro — unrated, priced in this catalogue · Undominated.ai

> OpenAI: GPT-6 Astra Pro: $10.00/M in, $50.00/M out. No independent quality score in this catalogue — unrated, not ranked, not scored zero.

MODEL PROOF

# GPT-6 Astra Pro

OpenAI · 04 Sept 2026

 Balanced Summarise Chat Code gen Agentic

NOT INDEPENDENTLY RATED

## No independent LMArena score is published for this model.

 **$20.00** / 1M tokens Balanced · 3 tokens in per 1 out

 Independent LMArena score Not independently rated
 Context window 1.05M
 Maximum output 128K
 Input modalities file, image, text
 Output modalities text
 Published input price $10.00 / 1M tokens
 Published output price $50.00 / 1M tokens
 Pricing kind fixed
 Context tiers Tiered by context

Evidence as of 19 Sept 2026

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MODEL MONUMENT

## Save or share this proof

OpenAI: GPT-6 Astra Pro. Balanced workload. Not independently rated. Evidence as of 19 Sept 2026.

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$10.00/M in, $50.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription. GPT-6 Astra Pro has no independent quality score. Unrated is not a score of zero.

### Every price dimension

| Input | $10.00 /M |
| --- | --- |
| Output | $50.00 /M |
| Cached input | $1.00 /M |
| Cache write | $12.50 /M |
| Web search | $0.01 /call |

**The headline rate does not apply to a long-context workload.**

| Past 272,000 tokens | $20.00 /M in (2×) $75.00 /M out |
| --- | --- |

### Who sells it

The same weights, different shops. Cheapest is not like-for-like when serving precision differs.

| Seller | Input | Output | Precision | Uptime (1d) |
| --- | --- | --- | --- | --- |
| Seller OpenAI | Input $5.00 | Output $25.00 | Precision undeclared | Uptime (1d) 100.00% |
| Seller Azure | Input $10.00 | Output $50.00 | Precision undeclared | Uptime (1d) 99.77% |
| Seller OpenAI | Input $10.00 | Output $50.00 | Precision undeclared | Uptime (1d) 99.96% |
| Seller Azure | Input $11.00 | Output $55.00 | Precision undeclared | Uptime (1d) — |
| Seller OpenAI | Input $20.00 | Output $100 | Precision undeclared | Uptime (1d) 100.00% |

### Independent scores

No independent benchmark has measured this model. Unrated is not a score of zero.

### Capability

| Context window | 1.1M |
| --- | --- |
| Max output | 128K |
| Input modes | file, image, text |
| Tool use | yes |
| Reasoning | always on |

### Provenance

| Price source | openrouter.ai |
| --- | --- |
| Fetched | 2026-09-19 |
| Quality data | unrated |

GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode

## Questions this page answers

### What does GPT-6 Astra Pro cost?

$10.00/M in, $50.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.

### Does GPT-6 Astra Pro have an independent quality score?

GPT-6 Astra Pro has no independent quality score in this catalogue. Unrated is not a score of zero.

### What beats GPT-6 Astra Pro?

GPT-6 Astra Pro has no independent quality score. Unrated is not a score of zero.

### Does this page use Artificial Analysis scores for GPT-6 Astra Pro?

No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.

[Check whether this is still the one to buy](/check/openai__gpt-6-astra-pro/)

## Related

No independent quality score, so there is no dominator to name. Unrated is not a clean bill of health.

 - Same vendor [GPT-5.5](/models/openai__gpt-5.5/)
- OpenAI models [OpenAI](/providers/openai/)
- Where this model appears [cliffs](/cliffs/)
- Same vendor [GPT-5.6 Sol](/models/openai__gpt-5.6-sol/)
- Where this model appears [effort](/effort/)
- Same vendor [GPT-5.4](/models/openai__gpt-5.4/)
- Where this model appears [spreads](/spreads/)
- Where this model appears [plans](/plans/)

## Badge

The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.

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 HTML Copy
 <a href="https://undominated.ai/models/openai__gpt-6-astra-pro/"><img src="https://undominated.ai/badge/openai__gpt-6-astra-pro.svg" alt="GPT-6 Astra Pro — Undominated.ai dominance verdict" height="36"></a>

Direct file: [https://undominated.ai/badge/openai__gpt-6-astra-pro.svg](https://undominated.ai/badge/openai__gpt-6-astra-pro.svg) — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never older than the last deploy.