GPT-5.6 Terra
GPT-5.6 TerraAlternatives?
CheaperGPT-6.1 Solhigh+33%-6%$0.32Remove unsupported parameters+5
BetterClaude Haiku 5.5xhigh+11%-63%$0.12Context: 1.05M → 1M+6
OpenMiMo v2.6 Prothinking+28%-61%$0.13Context: 1.05M → 1M+4Lower effortSame modelmedium-14%-46%$0.18
CheaperMiniMax M3.1 Flashthinking+25%-35%$0.22Context: 1.05M → 1M+1GPT-6.1 Solhigh+33%-6%$0.32Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+28%-61%$0.13Context: 1.05M → 1M+4MiniMax M3.1 Flashthinking+25%-35%$0.22Context: 1.05M → 1M+1Claude Haiku 5.5max+15%-37%$0.21Context: 1.05M → 1M+6
DeepSeek V4.1 Flash 1017maxOpen+13%-22%$0.26Context: 1.05M → 1M+5Claude Haiku 5.5xhigh+11%-63%$0.12Context: 1.05M → 1M+6GPT-6.1 Sollow+23%-61%$0.13Remove unsupported parameters+5MiMo v2.6 ProthinkingOpen+28%-61%$0.13Context: 1.05M → 1M+4MiniMax M3.1 Flashthinking+25%-35%$0.22Context: 1.05M → 1M+1GPT-6 Solmedium+6%-27%$0.25MiMo v2.6 ProthinkingOpen+28%-61%$0.13Context: 1.05M → 1M+4
Kimi K3maxOpen+22%+492%$2.00Context: 1.05M → 1M+4
Step 5 PreviewthinkingOpen+21%+204%$1.03Context: 1.05M → 1M+4
Muse Spark OpenxhighOpen+14%+150%$0.84Context: 1.05M → 1M+2DeepSeek V4.1 Flash 1017maxOpen+13%-22%$0.26Context: 1.05M → 1M+5GPT-6 Astrahigh+38%+411%$1.73Monitoring can return HTTP 403+2GPT-6.1 Solhigh+33%-6%$0.32Remove unsupported parameters+5GPT-5.6 Solhigh+19%+139%$0.81GPT-5.5high+17%+356%$1.54Prompts with >272K input tokensGPT-6 Solhigh+15%+10%$0.37GPT-5.3 Codexxhigh+10%—$1.75 / $14Context: 1.05M → 400K+1GPT-5.6 Lunahigh-13%-87%$0.044GPT-6 Lunahigh-14%-91%$0.029Function calling only with none · Chat Completions+3All OpenAI models →Benchmarks
in Chat & KnowledgeWatch out 1
Prompts with >272K input tokens›
Above 272K input tokens, input costs 2× and output 1.5× for the full request. Source ↗
FAQ
How much does GPT-5.6 Terra cost?›
$2 per 1M input tokens and $12 per 1M output tokens; cached input $0.20 per 1M. A typical benchmark task costs about $0.34 at high effort.
Is GPT-5.6 Terra free to use?›
There is no free API; the cheapest paid price is $2 per 1M input tokens.
How good is GPT-5.6 Terra, and what is it best at?›
#49 of 334 in Chat & Knowledge, #51 of 132 in Coding, #41 of 133 in Agents & Tool Use, #46 of 195 in Writing & Language, #25 of 124 in Vision & Documents. Strongest at: Agents & work tasks, Reasoning, Science, Knowledge, Vision.
Is GPT-5.6 Terra better than Qwen3.8 Max (0902)?›
On Humanity's Last Exam, GPT-5.6 Terra scores 42.9 vs 43.1 — about the same. It is 94% cheaper per task.
How can I use GPT-5.6 Terra?›
Through the API of Amazon Bedrock, Azure, OpenAI.
What is the context window of GPT-5.6 Terra?›
1.05M tokens, with up to 128K output tokens.
When was GPT-5.6 Terra released? Is there a newer version?›
Released 2026-07-09. It is the current version in its line.
Is GPT-5.6 Terra open source?›
No, GPT-5.6 Terra is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.
Can GPT-5.6 Terra read images?›
It accepts text and images, PDF files as input.
What is GPT-5.6 Terra?›
GPT-5.6 Terra is a closed language model from OpenAI, released Jul 2026, the successor to GPT-3.5 Turbo.
What are the best alternatives to GPT-5.6 Terra?›
GPT-6.1 Sol (cheaper), Claude Haiku 5.5 (better), MiMo v2.6 Pro (open weights).