GPT-5.6 Terra — AI Model Review & Pricing
GPT-5.6's balanced everyday tier — GPT-5.5-competitive performance at roughly 2x lower cost than the Sol flagship. A general-purpose workhorse for production agents and coding with a 1.05M-token context window.
Specifications
| Attribute | Value |
|---|---|
| Lab | OpenAI |
| Tags | Intelligent Coding Agentic |
| Release Date | 2026-07 |
| Context Window | 1,050,000 tokens |
| Input Price / 1M | $2.50 |
| Output Price / 1M | $15.00 |
| Input Modalities | Text |
| Output Modalities | Text |
Strengths
- GPT-5.5-competitive quality at ~2x lower cost than Sol
- 1.05M-token context at a mid-tier price
- Strong general-purpose coding and agentic baseline
- Replaces GPT-5.4 as the balanced default workhorse
Weaknesses
- Trails Sol on frontier and agentic benchmarks
- No Ultra multi-agent mode
Best For
- Production agents and everyday coding
- Cost-aware general-purpose use
- Mid-volume API traffic
In Depth: GPT-5.6 Terra
Draft layout · copy TKSummary
GPT-5.6 Terra is an AI model from OpenAI ranked #13 of 120 on the LMRank leaderboard.
Released 2026-07. It supports Text input and produces Text output, with a context window of 1,050,000 tokens. Input pricing is $2.50 per 1M tokens and output is $15.00 per 1M tokens on OpenRouter.