Model comparison
GPT-6.1 Terra and Mercury 3 compared on price, context window, capabilities and published benchmarks. Data comes from the OpenModels registry.
| Specification | GPT-6.1 Terra | Mercury 3 |
|---|---|---|
| Developer | Openai | Mercury |
| Released | Oct 26, 2026 | Oct 19, 2026 |
| Context window | 1.05M tokens | 1M tokens |
| Input price / 1M | $1.00via OpenAI | $0.10via OpenRouter |
| Output price / 1M | $5.00via OpenAI | $0.35via OpenRouter |
| Providers | 1 | 1 |
| License | proprietary | proprietary |
| Input modalities | code, image, text | code, text |
| Capabilities | chat, completion, function-calling, vision, code-generation, reasoning | chat, completion, function-calling, code-generation, reasoning |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
No published benchmark scores recorded for these models yet.