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GPT-5.6 Terra
🇺🇸OpenAI1w
Context:1.1M tokens
Input:$2.5/1M
Output:$15/1M
Neura Index
88.1
Rank #9—
mediumCategory Profile
Benchmark Scores (7)
reasoning
| Benchmark | Score | Source |
|---|---|---|
| GPQA Diamond | 92.9 | verified |
coding
| Benchmark | Score | Source |
|---|---|---|
| SWE-Bench Pro | 63.4 | verified |
multimodal
| Benchmark | Score | Source |
|---|---|---|
| MMMU-Pro | 80.7 | verified |
Performance History
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Frequently Asked Questions about GPT-5.6 Terra
What is GPT-5.6 Terra's Neura Intelligence Index score?▾
GPT-5.6 Terra by OpenAI scores 88.1 out of 100 on the Neura Intelligence Index, ranking #9 among tracked AI models. This composite score is computed from 7 individual benchmarks across coding, math, reasoning, and language categories.
How much does GPT-5.6 Terra cost to use?▾
GPT-5.6 Terra costs $2.5/1M input tokens and $15/1M output tokens via API. At a typical 3:1 input-to-output ratio with 1M tokens/day usage, the estimated monthly cost is approximately $169.
Is GPT-5.6 Terra open source?▾
No, GPT-5.6 Terra is a proprietary model by OpenAI. It is only accessible via their API.
What is GPT-5.6 Terra's context window?▾
GPT-5.6 Terra supports a context window of 1.1 million tokens, allowing it to process very long documents, codebases, and conversations in a single request.
What benchmark does GPT-5.6 Terra perform best on?▾
GPT-5.6 Terra achieves its highest score on GPQA Diamond with a score of 92.9%. This benchmark evaluates 448 graduate-level science questions (biology, chemistry, physics) designed to be hard for non-experts.