GPT-5.6 Terra is cheaper than Mercury at $2.5/M vs $10/M input tokens.
| Spec | GPT-5.6 Terra | Mercury |
|---|---|---|
| Input price | $2.5/M tokens | $10/M tokens |
| Output price | $15/M tokens | $10/M tokens |
| Context window | 1.1M tokens | 32K tokens |
| Released | Jul 2026 | Jun 2025 |
Not enough votes to call it. On the specs, GPT-5.6 Terra has the edge: bigger model tier, newer, bigger context window, major provider backing.
GPT-5.6 Terra wins input (4.0× cheaper)·Mercury wins output (1.5× cheaper)
Mercury uses 4.3x more emoji
GPT-5.6 Terra is cheaper than Mercury at $2.5/M vs $10/M input tokens.
| Spec | GPT-5.6 Terra | Mercury |
|---|---|---|
| Input price | $2.5/M tokens | $10/M tokens |
| Output price | $15/M tokens | $10/M tokens |
| Context window | 1.1M tokens | 32K tokens |
| Released | Jul 2026 | Jun 2025 |
Not enough votes to call it. On the specs, GPT-5.6 Terra has the edge: bigger model tier, newer, bigger context window, major provider backing.
GPT-5.6 Terra wins input (4.0× cheaper)·Mercury wins output (1.5× cheaper)
Mercury uses 4.3x more emoji