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GPT-5.6 TerraGPT-5.6 SolGPT-5.6 LunaChat with these 3
AttributeGPT-5.6 Terraopenai/gpt-5.6-terraGPT-5.6 Solopenai/gpt-5.6-solGPT-5.6 Lunaopenai/gpt-5.6-luna
Specs
Context window1M1M1M
Max output128K128K128K
Input modalitiesTextImageTextImageTextImage
Output modalitiesTextTextText
Capabilities
StreamingSupportedSupportedSupported
Tool callingSupportedSupportedSupported
Structured output (JSON)SupportedSupportedSupported
Image inputSupportedSupportedSupported
Thinking modeSupportedSupportedSupported
Price / 1M tokens
Input$ 2.00>= 272K$ 4.00$ 5.00>= 272K$ 10.00$ 0.20>= 272K$ 0.40
Output$ 12.00>= 272K$ 18.00$ 30.00>= 272K$ 45.00$ 1.20>= 272K$ 1.80
Cache read$ 0.20>= 272K$ 0.40$ 0.50>= 272K$ 1.00$ 0.020>= 272K$ 0.040
Cache write$ 2.50>= 272K$ 5.00$ 6.25>= 272K$ 12.50$ 0.25>= 272K$ 0.50
What it is good at
Best for
  • Everyday knowledge work
  • Cost-aware agentic coding
  • Frontier agentic coding
  • Complex professional work
  • High-volume agent execution
  • Routine implementation and subagents
Published benchmarks
Terminal-Bench 2.1pass_rate
  • 87.4%effort max(setup not fully disclosed)
  • 88.8%effort max(setup not fully disclosed)
  • 84.7%effort max(setup not fully disclosed)
BrowseComp (with tools)accuracy
  • 87.5%effort max(setup not fully disclosed)
  • 90.4%effort max(setup not fully disclosed)
  • 83.3%effort max(setup not fully disclosed)
Agents' Last Examscore
  • 50.4%effort max(setup not fully disclosed)
  • 52.7%effort max(setup not fully disclosed)
  • 50.3%effort max(setup not fully disclosed)
SWE-Bench Pro (Public)pass_rate
  • 63.4%effort max(setup not fully disclosed)
  • 64.6%effort max(setup not fully disclosed)
  • 62.7%effort max(setup not fully disclosed)
OSWorld 2.0success_rate
  • 50.2%effort max(setup not fully disclosed)
  • 62.6%effort max(setup not fully disclosed)
  • 45.6%effort max(setup not fully disclosed)
OpenAI MRCR v2 8-needle 512K–1Maccuracy
  • 72.5%effort max(setup not fully disclosed)
  • 73.8%effort max(setup not fully disclosed)
  • 41.3%effort max(setup not fully disclosed)
MMMU Pro (with tools)accuracy
  • 82%effort max(setup not fully disclosed)
  • 84.6%effort max(setup not fully disclosed)
  • 79.5%effort max(setup not fully disclosed)
GPQA Diamondaccuracy
  • 92.9%effort max(setup not fully disclosed)
  • 94.6%effort max(setup not fully disclosed)
  • 92.3%effort max(setup not fully disclosed)
Toolathlonscore
  • 53.1%effort max(setup not fully disclosed)
  • 58%effort max(setup not fully disclosed)
  • 53.4%effort max(setup not fully disclosed)