GPT-6: Astra for engineering and CAD

Design-review support, spec-to-drawing consistency checks, and CAD-adjacent reasoning tasks where an engineer signs off on the output.

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Last verified 5 September 2026.

Use GPT-6 Astra in 4 steps

Step 1 of 4

Try GPT-6 Astra in the OneInfer playground without writing code, or create an API key in the Console to call it from your app.

export ONEINFER_API_KEY="your-api-key"

The grounding number: BenchCAD 95.9%

GPT-6: Astra scores 95.9% on BenchCAD, OpenAI's CAD-reasoning evaluation — one of its strongest published domain scores, alongside FrontierMath and ExploitBench.

Example prompt

Example
Review the attached design specification against the referenced drawing. List every dimension, tolerance, or material callout that appears inconsistent between the two documents, and cite the exact section for each.

Who should look elsewhere

GPT-6: Astra does not generate or edit native CAD files; it reasons about specifications, drawings-as-text, and design constraints in natural language and image input. If you need direct CAD-file manipulation, pair it with your CAD tool's own scripting layer rather than expecting native file output.

Ready to test the workflow?

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Recommended access

Use pay-as-you-go API credits for a controlled evaluation on your own workload and cost profile before committing production routing.

Put GPT-6: Astra to work

Fund a controlled evaluation, start with a prepared prompt, and measure quality and cost on your own workload.

Create account & add creditsRun this with GPT-6: Astra