GPT-5.6 Terra
GPT-5.6 TerraAlternatives?
CheaperGLM 5.3 FlashmaxOpen+59%-55%$0.28Context: 1.05M → 1M+5OpenGLM 5.3max+69%+217%$2.01Context: 1.05M → 1M+5Lower effortSame modelhigh-3%-47%$0.34
CheaperQwen3.8 FlashthinkingOpen+53%-41%$0.37Context: 1.05M → 262K+6
CheaperLing 3.0 Flash FinthinkingOpen+30%-98%$0.06 / $0.18Context: 1.05M → 262K+1GLM 5.3 FlashmaxOpen+59%-55%$0.28Context: 1.05M → 1M+5Qwen3.8 FlashthinkingOpen+53%-41%$0.37Context: 1.05M → 262K+6Ling 3.0 Flash FinthinkingOpen+30%-98%$0.06 / $0.18Context: 1.05M → 262K+1
Grok 4.6low+28%-41%$0.38Context: 1.05M → 500KGPT-5.6 Solmedium+23%-20%$0.50GLM 5.3 FlashmaxOpen+59%-55%$0.28Context: 1.05M → 1M+5Qwen3.8 FlashthinkingOpen+53%-41%$0.37Context: 1.05M → 262K+6Grok 4.6low+28%-41%$0.38Context: 1.05M → 500KGPT-5.6 Solmedium+23%-20%$0.50
DeepSeek V4 Pro 0813maxOpen+33%+7%$0.67Context: 1.05M → 1M+6GLM 5.3maxOpen+69%+217%$2.01Context: 1.05M → 1M+5Qwen3.8 2.4T A95BthinkingOpen+65%+241%$2.16Context: 1.05M → 262K+6Qwen3.8 27BxhighOpen+62%+59%$1.01Context: 1.05M → 262K+5GLM 5.3 FlashmaxOpen+59%-55%$0.28Context: 1.05M → 1M+5
Kimi K3maxOpen+55%+217%$2.00Context: 1.05M → 1M+4GPT-6 Astraxhigh+45%+265%$2.31Monitoring can return HTTP 403+2GPT-5.4xhigh+33%—$2.50 / $15GPT-5.5xhigh+31%+317%$2.63Prompts with >272K input tokensGPT-5.6 Solxhigh+28%+87%$1.18GPT-5.6 Lunaxhigh-3%-86%$0.085GPT-5.4 Nanoxhigh-8%-71%$0.18Context: 1.05M → 400KGPT-5.4 Minixhigh-14%-29%$0.45Context: 1.05M → 400KGPT-5high-26%—$1.25 / $10Context: 1.05M → 400KAll OpenAI models →Benchmarks
in Agents & Tool UseWatch 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 $0.63 at xhigh 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?›
#37 of 334 in Chat & Knowledge, #39 of 132 in Coding, #39 of 133 in Agents & Tool Use, #46 of 195 in Writing & Language, #22 of 124 in Vision & Documents. Strongest at: Agents & work tasks, Reasoning, Science, Long context, Knowledge, Vision.
Is GPT-5.6 Terra better than Grok 4.5?›
On τ³-Banking · AA, GPT-5.6 Terra scores 40.2 vs 42.1 — lower. It is 28% 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 GLM 5.3.
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?›
GLM 5.3 Flash (cheaper), GLM 5.3 (open weights).