NOUMENOpen app
NOUMEN

OpenAI · Frontier

GPT 6.1 Sol

Added Sep 29, 2026

Compare models

Choose up to 3 models to compare.0 of 3 chosen

Loading models…

Use in the app

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.

  • Reasoning
  • Tools
  • Vision
  • Structured output
  • PDF input
Input
Text, Images
Output
Text
Reasoning effort
low · medium · high · xhigh · max
Discovery tier
Frontier

Pricing

USD per 1M tokens
Input
$2.00
Output
$10.00
Cache read
$0.10
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)
388 tokens
Longer than 39% of 473 models

Side by side

Compare models

Put GPT 6.1 Sol next to up to three other models. The comparison stays in the link, so you can share it.

Compare models

Choose up to 3 models to compare.0 of 3 chosen

Loading models…

TryMuse Spark 1.3Claude Opus 5Grok 4.7All 3

Public evaluations

Benchmarks

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

Intelligence Index

47.8

Tested at medium reasoning effort

Better than 95% of 326 scored models

3.8Catalog models by score55.1

Agentic work

  • AutomationBench-AA

    62.6%

    Workflow automation, penalized for guardrail violations

    Better than 89% of 173 scored models

  • AutomationBench-AA tasks completed

    30.1%

    Workflows finished end to end without a guardrail violation

    Better than 85% of 173 scored models

  • AA-Briefcasev1.1

    1,359 Elo

    Agentic knowledge work, rated head to head

    Better than 74% of 166 scored models

  • GDPval-AAv2.1

    1,450 Elo

    Economically valuable occupational tasks, rated head to head

    Better than 71% of 187 scored models

Document reasoning

  • GDP.pdf

    30.0%

    Professional reasoning over PDF documents, all-pass rate

    Better than 95% of 171 scored models

  • AA-LCRv1.1

    83.3%

    Reasoning across long documents

    Better than 92% of 309 scored models

  • MLCR-AA

    32.2%

    Long-context reasoning over medical records

    Better than 95% of 121 scored models

Reasoning and knowledge

  • Humanity’s Last Exam

    49.9%

    Expert-level questions across academic fields

    Better than 95% of 323 scored models

Coding

  • Terminal-Benchv4.0

    48.0%

    Practical software engineering in a terminal

    Better than 92% of 171 scored models

  • SciCode

    53.2%

    Scientific computing in Python

    Better than 62% of 174 scored models

Legacy evaluations

  • AA-LCR (unversioned)

    83.3%

    Long-context reasoning, earlier grading

    Better than 92% of 309 scored models

Scores from Artificial Analysis, updated Oct 26, 2026. GPT 6.1 Sol 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
125.5 tok/s
Faster than 72% of 259 models
Time to first token
5.0 s
Quicker than 30% of 259 models
Prompt cache hits
96.9%
About $0.16 per 1M input tokens with caching
Request success (24h)
99.9%
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 83.7%
  • 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-6.1-sol",
    "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-6.1-sol",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

OpenAI

Other OpenAI models, starting with the same family.