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  1. Models
  2. Text
  3. OpenAI

GPT 6.1 Terra

GPT-6.1 Terra is a fast, efficient model for everyday work, with strong visual reasoning, clearer writing, and capable coding at half GPT-6.1 Sol’s standard token prices. It supports text and image input, tool calling, structured outputs, and optional reasoning from none through max.

  • Reasoning
  • Vision
  • Native PDF input
  • Tool Calling
  • Structured Output

Added Oct 26, 2026

Pricing

Auto routing · per 1M tokens
Input
$1.00
Output
$5.00
Cache read
$0.050
Compare provider prices

Specifications

Context window
1.1M
Max output
128K

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index

33.5

Intelligence Index: 33.5
Better than 85% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

51.0%

Better than 65% of models compared

AutomationBench-AA Tasks Completed

Fully completed workflows without guardrail violations

18.7%

Better than 64% of models compared

AA-Briefcase v1.1

Agentic knowledge work (Elo)

1227 Elo

Better than 61% of models compared

GDPval-AA v2.1

Economically valuable tasks (Elo)

1287 Elo

Better than 64% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

23.2%

Better than 79% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

67.7%

Better than 57% of models compared

Reasoning

HLE

Humanity's Last Exam

21.1%

Better than 67% of models compared

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

26.8%

Better than 76% of models compared

SciCode

Python programming for scientific computing

47.8%

Better than 43% of models compared

Legacy benchmarks

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

67.7%

Better than 57% of models compared

Last updated Oct 26, 2026

Artificial Analysis

Providers

Auto routing is available for this model. Explicit provider selection is not available.

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Reliability

Last 3 days

Related text models

Compare GPT 6.1 Terra with similar models from the same provider or model family.

GPT Terra Latest

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GPT 5.6 Terra

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GPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between flagship Sol and cost-efficient Luna. It is suited for everyday coding, reasoning, agentic work, and general professional tasks.

GPT 5.6 Terra Pro

openai/gpt-5.6-terra-pro

GPT-5.6 Terra with Pro reasoning mode. Pro mode performs more model work for difficult tasks; reasoning effort remains independently configurable and defaults to medium.

GPT 6.1 Sol

openai/gpt-6.1-sol

GPT-6.1 Sol delivers near-Astra performance at a lower cost for complex coding, computer use, and professional work. It supports text and image input, tool calling, structured outputs, and reasoning from low through max.

GPT 6.1 Sol Pro

openai/gpt-6.1-sol-pro

GPT-6.1 Sol Pro uses the same underlying model as GPT-6.1 Sol with Pro reasoning mode enabled for higher-quality responses on complex tasks.

GPT 6 Luna

openai/gpt-6-luna

GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, suited for high-volume chat, classification, and lightweight agent workflows.