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About

GPT-5.6 Terra is a balanced model in the GPT-5.6 series designed for everyday work, coding, agentic workflows, cybersecurity support, biology analysis, and enterprise automation. It sits between GPT-5.6 Sol, the flagship model, and GPT-5.6 Luna, the faster and lower-cost option. Terra is positioned to deliver competitive performance to GPT-5.5 while being significantly cheaper to run. The model supports improved reasoning, coding, tool coordination, long-horizon workflows, and legitimate defensive security work. It is part of a model family built with layered safeguards, including trained refusals, real-time misuse classifiers, account-level review, differentiated access, monitoring, and continued red-team testing. GPT-5.6 Terra helps developers, enterprises, and technical teams access strong AI capabilities with a more practical balance of intelligence, speed, and cost.

About

We introduce the Granite series of decoder-only code models for code generative tasks (e.g., fixing bugs, explaining code, documenting code), trained with code written in 116 programming languages. A comprehensive evaluation of the Granite Code model family on diverse tasks demonstrates that our models consistently reach state-of-the-art performance among available open source code LLMs. The key advantages of Granite Code models include: All-rounder Code LLM: Granite Code models achieve competitive or state-of-the-art performance on different kinds of code-related tasks, including code generation, explanation, fixing, editing, translation, and more. Demonstrating their ability to solve diverse coding tasks. Trustworthy Enterprise-Grade LLM: All our models are trained on license-permissible data collected following IBM's AI Ethics principles and guided by IBM’s Corporate Legal team for trustworthy enterprise usage.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, businesses, enterprise teams, AI engineers, security teams, research teams, product teams, and organizations that need balanced AI performance for coding, everyday work, agentic workflows, technical analysis, defensive cybersecurity, API usage, Codex workflows, and cost-efficient automation

Audience

Developers interested in a powerful AI coding model

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$2 per 1M tokens (input)
$2 input / $12 output per 1M tokens
Free Version
Free Trial

Pricing

Free
Open source
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 4.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • GPT-5.6 Terra seems like the practical daily driver of the lineup. As a developer, I like that it is positioned as a strong lower-cost model while still being useful for coding, professional work, and agentic tasks. This is probably the model I would use for the bulk of my normal development workflow: writing functions, reviewing code, generating tests, explaining errors, drafting docs, and helping with everyday automation. OpenAI’s developer community announcement describes Terra as a balanced model with GPT-5.5-competitive performance at lower cost, which makes it really interesting for teams trying to scale AI usage without blowing up their budget.

Cons

  • Terra probably would not be my first pick for the hardest multi-hour agent runs or the most complex architecture decisions. For those, I would still want Sol. Terra feels more like the dependable workhorse than the absolute top-end reasoning model. The other downside is that developers will need to figure out where the line is between “Terra is enough” and “this needs Sol.” That routing decision matters a lot if you are building cost-efficient developer tools or coding agents.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com

Company Information

IBM
Founded: 1911
United States
www.ibm.com/granite

Alternatives

Grok 4.6

Grok 4.6

SpaceXAI

Alternatives

Claude Opus 5

Claude Opus 5

Anthropic
CodeQwen

CodeQwen

Alibaba
Claude Fable 5

Claude Fable 5

Anthropic
Codestral

Codestral

Mistral AI
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI
Codestral Mamba

Codestral Mamba

Mistral AI

Categories

Categories

Integrations

Agentforce Vibes
App0
ChatGPT Images
Codex CLI
EaseMate AI
GPT-5.1-Codex
HTML
Hermes Agent
Java
Kineto by JetBrains
Lua
Microsoft Copilot Studio
Novelcrafter
OpenCode
OpenRouter
Oz
PrivatClaw
Python
SpawnHQ
Xcode

Integrations

Agentforce Vibes
App0
ChatGPT Images
Codex CLI
EaseMate AI
GPT-5.1-Codex
HTML
Hermes Agent
Java
Kineto by JetBrains
Lua
Microsoft Copilot Studio
Novelcrafter
OpenCode
OpenRouter
Oz
PrivatClaw
Python
SpawnHQ
Xcode
Claim GPT-5.6 Terra and update features and information
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