GPT-5.6 Terra
Active Parameters
-
Context Length
1.05M
Modality
Multimodal
Architecture
Mixture of Experts (MoE)
License
-
Release Date
9 Jul 2026
Knowledge Cutoff
Feb 2026
Evaluation Benchmarks
Rank
#38
| Benchmark | Score | Rank |
|---|---|---|
Reasoning max | 0.91 | 🥉 3 |
Mathematics max | 0.95 | ⭐ 7 |
Data Analysis max | 0.79 | 8 |
Agentic Coding max | 0.55 | 10 |
General max | 0.78 | 12 |
LiveBench Average max | 0.78 | 12 |
Coding max | 0.78 | 20 |
Web Development high | 1520 | 22 |
Web Development max | 1520 | 22 |
Web Development Standard | 1519 | 24 |
Agent Arena high | 0.03 | 28 |
Agent Arena Standard | 0.03 | 31 |
General Text high | 1466 | 37 |
General Text Standard | 1464 | 43 |
Rankings
Overall Rank
#38
Coding Rank
#34
About GPT-5.6 Terra
OpenAI's GPT-5.6 Terra is the balanced production workhorse delivering near-flagship intelligence at half the cost of Sol, ideal for code generation, structured extraction, and general-purpose agents.
Technical Specifications
Detailed architecture specifications are limited for proprietary models.
Resources
About GPT-5.6
OpenAI's GPT-5.6 series represents the next-generation frontier intelligence family structured into three tiered variants: Sol (flagship reasoning and autonomous agents), Terra (balanced everyday production workhorse), and Luna (lightweight, ultrafast, cost-effective inference). It introduces new max and ultra (sub-agent coordination) reasoning modes, native programmatic tool calling, a 1M token context window with 128k output tokens, and a February 16, 2026 knowledge cutoff.