Same Codex task, measured: GPT-6 Astra Low costs 6.9x more than Sol High
arty0mk · reddit · 2026-09-11
A user measured the cost of GPT-6 Astra Low, GPT-5.6 Sol High, and GPT-5.6 Terra High on the exact same Codex task — exporting a medium-sized chat history as a .md file with minimal tokens — by recording account balance before and after each run:
- GPT-6 Astra Low: $2.23
- GPT-5.6 Sol High: $0.32
- GPT-5.6 Terra High: $0.42
Astra Low cost 6.9× as much as Sol High, far beyond expectations. The author cautions this is a tiny single-task sample and may not generalize, but it's a real measurement — directly relevant for pay-as-you-go users choosing models.
Related event: Tests Show GPT-6 Astra Burns Tokens Far Faster Than Sol(2 posts)→
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