GPT Astra vs Gemini Pro
A five-fold price gap between two frontier models. Gemini 3.1 Pro runs at $2 and $12 per million tokens against Astra's $10 and $50, carries a comparable context window, and takes audio natively, which Astra does not. Astra is the stronger agent and the better operator of software. For work that is reading, reasoning and writing rather than clicking, Gemini is the substantially better value.
| GPT Astra | Gemini Pro | |
|---|---|---|
| Provider | OpenAI | |
| Current release | GPT-6 Astra | 3.1 Pro |
| Tier | Frontier | Frontier |
| Context | 1M | 1M |
| Cost | Frontier price | Moderate |
| Modalities | text, vision | text, vision, audio |
| Open weights | No | No |
Cost is a tier, not a quote, providers change prices often. Check OpenAI and Google before you commit. Last updated 2026-09-04.
Which one to pick
GPT AstraOpenAI · GPT-6 Astra
The hardest end-to-end work, computer use, and long agentic runs that span applications
Reach for it when- Agentic work that drives real interfaces
- The hardest engineering and research tasks
Gemini ProGoogle · 3.1 Pro
Reasoning over very long inputs, whole codebases, long documents, video
Reach for it when- Long documents, video or audio in the prompt
- High-volume frontier-tier work where the token bill matters
- You already pay for Google Cloud
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