OpenAI · stable
OpenAI's documented GPT-5.6 model positioned between frontier capability and API cost.
Specialist evidence
Source-native operational evidence for GPT-5.6 Terra. Exact configurations remain separate. Costs are comparable only within the same selected benchmark/evaluation, and these rows never enter Overall Score.
| Evaluation | Exact configuration | Performance | Cost / task | Tokens / task | Execution |
|---|---|---|---|---|---|
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-high Codex - GPT-5.6 Terra (high) | 54.6 | $1.14 | 5600276 | 67.1 steps |
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-low Codex - GPT-5.6 Terra (low) | 38.6 | $0.385 | 1657647 | 37.8 steps |
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-max Codex - GPT-5.6 Terra (max) | 60.4 | $1.93 | 9630512 | 95.8 steps |
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-max Codex - GPT-5.6 Terra (none) | 23.1 | $0.293 | 1105802 | 33.8 steps |
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-medium Codex - GPT-5.6 Terra (medium) | 48.0 | $0.670 | 3164607 | 51 steps |
| Artificial Analysis Coding Agents · 1.4 · composite Artificial Analysis Coding Agents · checked 2026-08-29 | gpt-5-6-terra-xhigh Codex - GPT-5.6 Terra (xhigh) | 56.0 | $1.36 | 6631652 | 75 steps |
| CursorBench · 3.2 · main CursorBench · checked 2026-08-29 | gpt-5-6-terra-high GPT-5.6 Terra High | 54.2% | $0.710 | 9468 | 23 steps |
| CursorBench · 3.2 · main CursorBench · checked 2026-08-29 | gpt-5-6-terra-low GPT-5.6 Terra Low | 46.9% | $0.420 | 5312 | 19 steps |
| CursorBench · 3.2 · main CursorBench · checked 2026-08-29 | gpt-5-6-terra-max GPT-5.6 Terra Max | 64.9% | $2.31 | 32969 | 47 steps |
| CursorBench · 3.2 · main CursorBench · checked 2026-08-29 | gpt-5-6-terra-medium GPT-5.6 Terra Medium | 50.3% | $0.490 | 6222 | 20 steps |
| CursorBench · 3.2 · main CursorBench · checked 2026-08-29 | gpt-5-6-terra-xhigh GPT-5.6 Terra Extra High | 59.2% | $1.15 | 16089 | 29 steps |
| Terminal-Bench 2.1 · 2.1 · verified Terminal-Bench 2.1 · checked 2026-08-29 | gpt-5-6-terra-max Codex; reasoning max; Terminal-Bench 2.1 verified submission. | 78.4% | $4.73 | — | — |
