Based on the Intelligence vs. Cost graph, not clear to me why anyone would use Terra? Luna looks quite interesting though, happy to see OpenAI still serving the more budget-oriented side of the market (seems like Anthropic and Google have lost interest there).
Luna@max is in a VERY interesting spot if their rankings are at all to be believed:
- Better than Opus4.8 in the coding agent index (doubt)
- Just below sonnet 5, even with glm5.2, in the overall intelligence index
- Cheaper than haiku4.5, glm5.2 and kimi2.6 on cost per intelligence task index
Cost and intelligence aren't the only axes. Terra has better latency and output speed than Sol for example.