The Pelican comparison grid for Astra is pretty interesting

I got access to GPT 6 Astra this afternoon, so naturally I used it to generate SVGs of pelicans riding bicycles at low, medium, high, xhigh and max reasoning levels (Astra doesn't support reasoning=none). Then I rendered those pelicans in a comparison grid with GPT 5.6 Sol, Terra, and Luna, and beyond being fun the…

Simon Willison 2 min readOriginal

4th September 2026

I got access to GPT-6 Astra this afternoon, so naturally I used it to generate SVGs of pelicans riding bicycles—at low, medium, high, xhigh and max reasoning levels (Astra doesn’t support reasoning=none). Then I rendered those pelicans in a comparison grid with GPT-5.6 Sol, Terra, and Luna, and beyond being fun the result was surprisingly useful.

Comparison grid showing gpt-6-astra, gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna at 6 different reasoning levels with pelicans and token counts and prices for each one. See the grid for full quality images. Here’s the transcript that created the GPT-6 Nova pelicans.

There are a few interesting things that stand out from this grid.

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