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GPT-5.6 TerraChat with this model
AttributeGPT-5.6 Terraopenai/gpt-5.6-terra
Specs
Context window1M
Max output128K
Input modalitiesTextImage
Output modalitiesText
Capabilities
StreamingSupported
Tool callingSupported
Structured output (JSON)Supported
Image inputSupported
Thinking modeSupported
Price / 1M tokens
Input$ 2.00>= 272K$ 4.00
Output$ 12.00>= 272K$ 18.00
Cache read$ 0.20>= 272K$ 0.40
Cache write$ 2.50>= 272K$ 5.00
What it is good at
Best for
  • Everyday knowledge work
  • Cost-aware agentic coding
Published benchmarks
Terminal-Bench 2.1pass_rate
  • 87.4%effort max(setup not fully disclosed)
BrowseComp (with tools)accuracy
  • 87.5%effort max(setup not fully disclosed)
Agents' Last Examscore
  • 50.4%effort max(setup not fully disclosed)
SWE-Bench Pro (Public)pass_rate
  • 63.4%effort max(setup not fully disclosed)
OSWorld 2.0success_rate
  • 50.2%effort max(setup not fully disclosed)
OpenAI MRCR v2 8-needle 512K–1Maccuracy
  • 72.5%effort max(setup not fully disclosed)
MMMU Pro (with tools)accuracy
  • 82%effort max(setup not fully disclosed)
GPQA Diamondaccuracy
  • 92.9%effort max(setup not fully disclosed)
Toolathlonscore
  • 53.1%effort max(setup not fully disclosed)