GPT-5.6 Terra
by OpenAItext+image+file->text5 endpoints
Neura Intelligence Index
88.1/ 100
Rank
#9—
Confidence
mediumBenchmarks
7(18% coverage)
Overview
GPT-5.6 Terra is a balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is suited for everyday coding, reasoning, and agentic...
Capabilities
Text generation
Image understanding
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Modalities
Input
FileImageText
Output
Text
Technical Specifications
Context Window
1.1M tokens
Max Output
128K tokens
Knowledge Cutoff
2026-02-16
Tokenizer
GPT
Content Moderation
Enabled
Uptime (24h)
9982.7%
Country
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools
Benchmark Performance
general
| Benchmark | Score | Source |
|---|---|---|
| MRCR v2 | 89.6 | verified |
coding
| Benchmark | Score | Source |
|---|---|---|
| SWE-Bench Pro | 63.4 | verified |
math
| Benchmark | Score | Source |
|---|
Performance Over Time
Pricing
Per 1M tokens
Input$2.50
Output$15.00
Cache read$0.25
Cache write$3.13