GPT-5.6 Terra is cheaper than GPT-5.5 at $2.5/M vs $5/M input tokens.
| Spec | GPT-5.5 | GPT-5.6 Terra |
|---|---|---|
| Input price | $5/M tokens | $2.5/M tokens |
| Output price | $30/M tokens | $15/M tokens |
| Context window | 1.1M tokens | 1.1M tokens |
| Released | Apr 2026 | Jul 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.6 Terra is cheaper on both — 2.0× input, 2.0× output
GPT-5.6 Terra uses 1.6x more transitions
GPT-5.6 Terra is cheaper than GPT-5.5 at $2.5/M vs $5/M input tokens.
| Spec | GPT-5.5 | GPT-5.6 Terra |
|---|---|---|
| Input price | $5/M tokens | $2.5/M tokens |
| Output price | $30/M tokens | $15/M tokens |
| Context window | 1.1M tokens | 1.1M tokens |
| Released | Apr 2026 | Jul 2026 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.6 Terra is cheaper on both — 2.0× input, 2.0× output
GPT-5.6 Terra uses 1.6x more transitions