GPT-6.1 Terra (OpenAI) vs GPT-5.4 Mini
GPT-5.4 Mini is cheaper on output tokens, while GPT-6.1 Terra (OpenAI) offers a larger context window. Choose GPT-6.1 Terra (OpenAI) or GPT-5.4 Mini based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-6.1 Terra (OpenAI) | GPT-5.4 Mini |
|---|---|---|
| Provider | LLM Gateway | OpenAI |
| Input / 1M tokens | $1.00 | $0.75 |
| Output / 1M tokens | $5.00 | $4.50 |
| Context window | 1.1M | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Oct 2026 | Mar 2026 |
| LiveBench score | — | 67.7 |
| GPQA Diamond score | — | 86.9 |
| FrontierMath score | — | 28.3 |
| Epoch Capabilities Index score | — | 149 |
| LMArena (Chatbot Arena) Elo score | — | 1412 |
| LMArena WebDev Elo score | — | 1397 |
| LMArena Vision Elo score | — | 1245 |
FAQ
Is GPT-6.1 Terra (OpenAI) or GPT-5.4 Mini cheaper?
GPT-5.4 Mini is cheaper on output tokens ($4.50 vs $5.00 per 1M).
Which has the larger context window, GPT-6.1 Terra (OpenAI) or GPT-5.4 Mini?
GPT-6.1 Terra (OpenAI) has the larger context window (1.1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.