# GPT-5.6 Terra release · 2026-07-09 · snapshot 2026-10-26

Creator: OpenAI · 6 effort levels

| Effort level | Input modalities | Intelligence | Total cost | E2E | On the frontier today | ID |
|---|---|---|---|---|---|---|
| GPT-5.6 Terra (Non-reasoning) | Text, Image | 20.80 | $256 | 5.11s | no | `gpt-5-6-terra-non-reasoning` |
| GPT-5.6 Terra (Low) | Text, Image | 27.50 | $350 | 5.91s | no | `gpt-5-6-terra-low` |
| GPT-5.6 Terra (Medium) | Text, Image | 30.10 | $447 | 5.99s | no | `gpt-5-6-terra-medium` |
| GPT-5.6 Terra (High) | Text, Image | 34.20 | $768 | 6.69s | no | `gpt-5-6-terra-high` |
| GPT-5.6 Terra (Xhigh) | Text, Image | 38.00 | $1187 | 36.4s | no | `gpt-5-6-terra-xhigh` |
| GPT-5.6 Terra (Max) | Text, Image | 42.10 | $2501 | 120.4s | no | `gpt-5-6-terra` |

## Launch day (2026-07-09)

- Reached the frontier: 2 of 6
- Impact (intelligence × log-cost hypervolume gained): 2.14
- Rank: #17 of 45 releases this past year
- GPT-5.6 Terra (Non-reasoning) missed: 1.0 points below MiMo-V2.5 at 3.87× its cost
- GPT-5.6 Terra (Low) missed: 2.9 points below DeepSeek V4 Pro 0424 (Max) at 1.26× its cost
- GPT-5.6 Terra (Medium) missed: 0.3 points below DeepSeek V4 Pro 0424 (Max) at 1.61× its cost
- GPT-5.6 Terra (Xhigh) missed: 0.8 points below Grok 4.5 (High) at 1.06× its cost


> Metrics snapshot: 2026-10-26T21:34:20Z. Intelligence index version: unknown. Release timeline, frontier age, release impact and shakeup cards are reconstructions using one selected snapshot's metrics, not a record of what was known at release. Scores, benchmark cost and derived value may change when the index methodology changes. Source documentation advertises v4.3.2; API correspondence is unverified.