Model Watch · OpenAI
Out since 3 September, but only for enterprises in OpenAI's Trusted Access programme. Prompts over 272K tokens bill at double, so the headline price isn't the one you'll pay on long context.
GPT-6 Astra is a model from OpenAI, built in the US. It's out, and you can call it today.
OpenAI released it on 3 September 2026. That date comes from the lab's own docs.
The tracker first logged the name on 7 August 2026 and last saw it on 3 September 2026.
| Lab | OpenAI |
|---|---|
| Built in | US |
| Status | released |
| API model id | gpt-6-astra |
| Released | 3 September 2026 |
| Context window | 1050K tokens |
| Max output | 128K tokens |
| Input, per 1M tokens | $10.00 |
| Output, per 1M tokens | $50.00 |
List prices per million tokens, read off the lab's own docs. Caching, batching and volume deals all cut the real number, so treat this as the ceiling. Check the source before you budget against it.
| Model | Status | Date | Context | In / 1M | Out / 1M |
|---|---|---|---|---|---|
| GPT-6 Astra | released | 3 September 2026 | 1050K tokens | $10.00 | $50.00 |
| GPT-5.6 Terra | released | 9 July 2026 | 1050K tokens | $2.00 | $12.00 |
| GPT-5.6 Sol | released | 9 July 2026 | 1050K tokens | $4.00 | $20.00 |
| GPT-5.6 Luna | released | 9 July 2026 | 1050K tokens | $0.20 | $1.20 |
| GPT-5.5 | released | 23 April 2026 | 1050K tokens | $5.00 | $30.00 |
| GPT-5.4 nano | released | 17 March 2026 | 400K tokens | $0.20 | $1.25 |
| GPT-5.4 Mini | released | 17 March 2026 | 400K tokens | $0.75 | $4.50 |
| GPT-5.4 | released | 5 March 2026 | 1050K tokens | $2.50 | $15.00 |
| GPT-5.3-Codex | released | 5 February 2026 | 400K tokens | $1.75 | $14.00 |
| GPT-5.2 | released | 11 December 2025 | 400K tokens | $1.75 | $14.00 |
| GPT-5.1 | released | 13 November 2025 | 400K tokens | $1.25 | $10.00 |
| GPT-5 | deprecated | 7 August 2025 | 400K tokens | $1.25 | $10.00 |
| o3 | deprecated | 16 April 2025 | 200K tokens | $2.00 | $8.00 |
| GPT-5.5 Pro | released | — | 1050K tokens | $30.00 | $180.00 |
A dash means the lab hasn't published that number for that model.
We tracked 8 public discussions naming GPT-6 Astra across r/ClaudeAI, r/GeminiAI, r/OpenAI and r/singularity between 2 September 2026 and 4 September 2026.
The subject that came up most was benchmark results, then availability and outages. A discussion can cover several, so these add up to more than 8.
| What people are discussing | Threads |
|---|---|
| benchmark results | 4 |
| availability and outages | 1 |
| what it costs | 1 |
Every tracked post, release, changelog entry or incident whose title or summary names GPT-6 Astra. Newest first, each one linking to where the lab published it.
Bug Fixes Corrected the GPT-6-Astra Fast tier description to say “2x speed, increased usage” instead of “1.5x.” This changes only the displayed text, not how requests run. ( #42632 ) Changelog Full Changelog: rust-v0.153.1...rust-v0.153.2 #42632 Fix GPT-6-Astra Fast tier description for 0.153.2 @anp-oai
New Features Added support for configuring GPT-6-Astra through the API without changing the default model or showing it in the model picker. ( #42605 ) Changelog Full Changelog: rust-v0.153.0...rust-v0.153.1 #42605 Backport GPT-6-Astra model catalog to 0.153 @anp-oai
3.8.0 (2026-09-03) Features api: add gpt-6-astra and related features ( #3791 ) ( 09f446f ) Documentation add canonical SDK security model ( #3778 ) ( 2a097b9 )
Legora used GPT-6 Astra to review 41 documents in minutes, find all four planted errors, and improve performance by nearly 40% in this financial-review workflow.
Using GPT-6 Astra, Playco built three themed game prototypes from one grey box foundation and reported 50% fewer manual fixes than with the previous model.
GPT-6 Astra is our most capable broadly deployed model and our first to reach the Critical level of cybersecurity capability under our Preparedness Framework.
Astra is the first OpenAI model to meet the Critical cybersecurity capability threshold under the Preparedness Framework, with stronger safeguards for release.
OpenAI is sharing preliminary cybersecurity evaluations for Astra and the steps we’re taking to strengthen safeguards and security controls.
The release timeline is every model we know about, filterable by lab, country and date. The tracker is the live feed these mentions come from, and Model Watch is the whole catalogue on one page.
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