GPT-5.6 Terra
OpenAI
The balanced model of OpenAI's GPT-5.6 generation (released July 2026), tuned for high-volume business work like customer support, internal tools, and document analysis. Terra offers competitive Terminal-Bench 2.1 performance at roughly half GPT-5.5's price.
Strengths
- Balanced GPT-5.6 tier for high-volume business tasks
- Competitive Terminal-Bench 2.1 performance, ~2x cheaper than GPT-5.5
- ~2x cheaper than GPT-5.5 with competitive performance
- Strong fit for customer support, internal tools, and document analysis
Caveats
- Limited preview as of June 2026 - not yet generally available
- Context window not finalized at preview (reported up to ~1.5M, unconfirmed)
- Below Sol on the hardest coding and reasoning tasks
- Vendor
- OpenAI
- Context Window
- 1,050,000 tokens
- Max Output
- 128,000 tokens
- License
- Proprietary
- Release Date
- 2026-07-09
- Training Cutoff
- 2026-02-16
- Modalities
- textimage
Capabilities
Vision
Audio
Video
Tool Use
Resources
Pricing
$2.50 per 1M input tokens, $15 per 1M output tokens - competitive with GPT-5.5 at ~2x cheaper. Launch pricing; check OpenAI's pricing page for current rates.