GPT-4o vs GPT-6.1 Terra (Fast)
Both have similar output pricing, while GPT-6.1 Terra (Fast) offers a larger context window. Choose GPT-4o or GPT-6.1 Terra (Fast) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-4o | GPT-6.1 Terra (Fast) |
|---|---|---|
| Provider | OpenAI | Vercel AI Gateway |
| Input / 1M tokens | $2.50 | $2.00 |
| Output / 1M tokens | $10.00 | $10.00 |
| Context window | 128K | 1.1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | May 2024 | Oct 2026 |
| GPQA Diamond score | 49.2 | — |
| FrontierMath score | 0.3 | — |
| LMArena (Chatbot Arena) Elo score | 1300 | — |
| LMArena Vision Elo score | 1137 | — |
| Epoch Capabilities Index score | 129 | — |
| SWE-bench Verified score | 38.8 | — |
| SWE-bench Multimodal score | 30.4 | — |
FAQ
Is GPT-4o or GPT-6.1 Terra (Fast) cheaper?
GPT-4o and GPT-6.1 Terra (Fast) have comparable output pricing.
Which has the larger context window, GPT-4o or GPT-6.1 Terra (Fast)?
GPT-6.1 Terra (Fast) 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.