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OpenAI · Frontier

GPT Terra Latest

Added Sep 11, 2026

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Use in the app

Compatibility alias that routes to GPT 5.6 Terra, the latest supported GPT Terra model.

  • Reasoning
  • Tools
  • Vision
  • Structured output
  • PDF input
Input
Text, Images
Output
Text
Reasoning effort
none · low · medium · high · xhigh · max
Discovery tier
Frontier

Pricing

USD per 1M tokens
Input
$2.00
Output
$12.00
Cache read
$0.20
Cache write
$2.50

Reference prices as published by the model provider. API example

Specifications

Context window
1.1M
Max output
128K
Average output (7 days)
223 tokens
Longer than 24% of 473 models

Side by side

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TryClaude Sonnet 4.6 ThinkingGemini Pro LatestMiniMax M3All 3

Public evaluations

Benchmarks

Independent evaluation results, with how each score ranks among the models in the Noumen catalog.

Intelligence Index

30.1

Tested at medium reasoning effort

Better than 73% of 326 scored models

3.8Catalog models by score55.1

Indexes

  • Coding Index

    64.7

    Composite of the coding evaluations

    Better than 66% of 168 scored models

Agentic work

  • AutomationBench-AA

    33.5%

    Workflow automation, penalized for guardrail violations

    Better than 50% of 173 scored models

  • AutomationBench-AA tasks completed

    7.2%

    Workflows finished end to end without a guardrail violation

    Better than 49% of 173 scored models

  • AA-Briefcasev1.1

    1,038 Elo

    Agentic knowledge work, rated head to head

    Better than 46% of 166 scored models

  • GDPval-AAv2.1

    1,266 Elo

    Economically valuable occupational tasks, rated head to head

    Better than 57% of 187 scored models

Document reasoning

  • GDP.pdf

    17.0%

    Professional reasoning over PDF documents, all-pass rate

    Better than 66% of 171 scored models

  • AA-LCRv1.1

    74.0%

    Reasoning across long documents

    Better than 58% of 309 scored models

  • MLCR-AA

    22.8%

    Long-context reasoning over medical records

    Better than 86% of 121 scored models

Reasoning and knowledge

  • Humanity’s Last Exam

    33.3%

    Expert-level questions across academic fields

    Better than 65% of 323 scored models

  • GPQA Diamond

    87.2%

    Graduate-level science questions

    Better than 69% of 291 scored models

  • IFBench

    62.2%

    Following precise output instructions

    Better than 60% of 215 scored models

Coding

  • Terminal-Benchv4.0

    1.0%

    Practical software engineering in a terminal

    Better than 37% of 171 scored models

  • SciCode

    50.5%

    Scientific computing in Python

    Better than 51% of 174 scored models

Legacy evaluations

  • τ²-Bench Telecom

    72.8%

    Tool use in a customer-support simulation

    Better than 55% of 214 scored models

  • AA-LCR (unversioned)

    74.0%

    Long-context reasoning, earlier grading

    Better than 58% of 309 scored models

Scores from Artificial Analysis, updated Oct 26, 2026. GPT Terra Latest was tested at medium reasoning effort; compare scores measured at the same effort.Artificial Analysis

Live routing data

Performance and reliability

Recent averages across requests routed for this model. Your own speed depends on prompt length, reasoning effort and load.

Throughput
245.5 tok/s
Faster than 89% of 260 models
Time to first token
2.2 s
Quicker than 70% of 260 models
Prompt cache hits
82.5%
About $0.52 per 1M input tokens with caching
Request success (24h)
100.0%
Reliable

Cache hits are the share of input tokens recently served from a prompt cache across all requests. They are not a forecast of your own hit rate.

Hourly request success · last 72 hoursLowest hour 100.0%
  • Healthy (98% or more)
  • Degraded (90–98%)
  • Down (under 90%)
  • No requests

Developers

Use it through the API

Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.

Read the quickstart
curl https://www.noumen.xyz/api/v1/chat/completions \
  -H "Authorization: Bearer $NOUMEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-terra-latest",
    "reasoning_effort": "medium",
    "messages": [{ "role": "user", "content": "Explain this stack trace." }]
  }'
import os
from openai import OpenAI

client = OpenAI(base_url="https://www.noumen.xyz/api/v1", api_key=os.environ["NOUMEN_API_KEY"])
reply = client.chat.completions.create(
    model="openai/gpt-terra-latest",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

OpenAI

Other OpenAI models, starting with the same family.