GPT-5.6 Terra
GPT-5.6 TerraAlternatives?
CheaperGPT-6.1 Sollow+43%-6%$0.13Remove unsupported parameters+5BetterGPT-6 Lunalow+26%-97%$0.005Function calling only with none · Chat Completions+3
OpenKimi K3max+51%+1,331%$2.00Context: 1.05M → 1M+4
CheaperMuse Glimmer 30BhighOpen+42%-59%$0.058Context: 1.05M → 131K
CheaperAgnes 2.5 Pro Beta+41%-97%$0.10 / $0.30Context: 1.05M → 1MGPT-6.1 Sollow+43%-6%$0.13Remove unsupported parameters+5Muse Glimmer 30BhighOpen+42%-59%$0.058Context: 1.05M → 131KGPT-6 Lunamax+42%-51%$0.068Function calling only with none · Chat Completions+3Agnes 2.5 Pro Beta+41%-97%$0.10 / $0.30Context: 1.05M → 1MnNex N2 ProOpen+39%-78%$0.50 / $2.50Context: 1.05M → 262KGPT-6 Lunalow+26%-97%$0.005Function calling only with none · Chat Completions+3GPT-5.6 Lunalow+19%-93%$0.01
Claude Haiku 5.5low+23%-82%$0.024Context: 1.05M → 1M+6
Ling 3.0 FlashthinkingOpen+24%-80%$0.028Context: 1.05M → 262K+1
MiMo v2.5thinkingOpen+24%-70%$0.042Context: 1.05M → 1MKimi K3maxOpen+51%+1,331%$2.00Context: 1.05M → 1M+4
Step 5 PreviewthinkingOpen+51%+635%$1.03Context: 1.05M → 1M+4MiMo v2.6 ProthinkingOpen+47%-5%$0.13Context: 1.05M → 1M+4Muse Glimmer 30BhighOpen+42%-59%$0.058Context: 1.05M → 131KLing 3.1 FlashOpen+41%+623%$1.01Context: 1.05M → 1M+1GPT-6.1 Solmedium+42%+53%$0.21Remove unsupported parameters+5GPT-5.3 Codexxhigh+42%—$1.75 / $14Context: 1.05M → 400K+1GPT-5.5medium+41%+448%$0.77Prompts with >272K input tokensGPT-6 Solmedium+40%+77%$0.25GPT-6.1 Terramedium+37%-32%$0.095GPT-5.6 Solmedium+37%+261%$0.50GPT-6 Astramedium+36%+1,003%$1.54Monitoring can return HTTP 403+2GPT-6 Lunamedium+34%-87%$0.017Function calling only with none · Chat Completions+3All OpenAI models →History
2 versionsBenchmarks
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 $0.14 at default 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?›
#170 of 360 in Chat & Knowledge, #65 of 137 in Coding, #76 of 138 in Agents & Tool Use, #52 of 197 in Writing & Language, #79 of 132 in Vision & Documents. Strongest at: Tool calling, Instructions.
Is GPT-5.6 Terra better than MiniMax M3?›
On AA-LCR (long context) 1.1, GPT-5.6 Terra scores 83 vs 83 — about the same. It is 72% 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 Kimi K3.
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), GPT-6 Luna (better), Kimi K3 (open weights).