OPENAI / MODEL GUIDE

GPT-6 Astra

A September 2026 GPT release for demanding work across reasoning, coding, computer use, research and documents.

Hosted model editionSeptember / October 2026 releaseOfficial source ↗

Release facts and lifecycle

Release announced
September 3, 2026
Model ID
gpt-6-astra
API formats
Responses and Chat Completions
Migration constraint
No none reasoning effort, custom temperature, top_p or logprobs

Original provider sources checked . These are source facts, not a benchmark of Flonno's deployment.

Open the live model record, benchmarks and release journal →

Where to start

Use a task with a verifiable final artifact and multiple steps. Record whether the agent finishes, recovers from errors and preserves source evidence. Inspect actual tool execution and total usage.

  • Complex reasoning
  • Computer use
  • Research agents

What to check before deployment

GPT-6 Astra does not support none reasoning effort, custom temperature, top_p or logprobs. Check your request adapter before replaying prompts from earlier models.

Confirm the exact model ID, checkpoint revision and endpoint in your test record. A base model name does not establish a provider's quantization, accepted inputs, context limit or current availability.

Measure useful results

Build a small evaluation from the workflow you already run. Define the expected answer before testing. Track correct results, formatting errors, retries, complete request time and reported input and output usage.

Count rejected answers and manual corrections. A low token rate can still produce a high cost per accepted result when the workflow needs retries or repair.

Estimate your token budget →

Sources and scope

This page is an editorial evaluation guide, not a benchmark result or a claim that this model is served by Flonno.

Official model announcement ↗

License / access: Provider service terms. Read the linked license or service terms for the full conditions. Original release and lifecycle sources checked 2026-10-10.