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OpenAI · Frontier

GPT Sol Latest

Added Sep 11, 2026

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Use in the app

Compatibility alias that routes to GPT 6.1 Sol, the latest supported GPT Sol model.

  • 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)
539 tokens
Longer than 51% of 473 models

Side by side

GPT Sol Latest compared

Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.

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GPT Sol LatestOpenAIThis modelGPT 6.1 Sol ProOpenAIRemove
ProviderOpenAIOpenAI
Discovery tierFrontierFrontier
AddedSep 11, 2026Sep 29, 2026
Limits
Context window1.05M1.05M
Max output128K128K
Average output539 tokens1.2K tokens
Pricing, USD per 1M tokens
Input$2.00$2.00
Output$10.00$10.00
Cache read$0.10$0.10
Cache write$2.50$2.50
Performance
Throughput147.9 tok/s—
Time to first token5.3 s—
Request success (24h)99.9%100.0%Best
Benchmark indexes
Intelligence Index47.8—
Capabilities
ReasoningYesYes
ToolsYesYes
VisionYesYes
Structured outputYesYes
PDF inputYesYes
Reasoning effortlow, medium, high, xhigh, maxlow, medium, high, xhigh, max

Public evaluations

Benchmarks

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

  • GPT Sol Latest
  • GPT 6.1 Sol Pro

Intelligence Index

  • GPT Sol Latest47.8
  • GPT 6.1 Sol Pro—

GPT Sol Latest tested at medium reasoning effort

GPT Sol Latest: Better than 95% of 326 scored models

3.8Catalog models by score55.1

Agentic work

  • AutomationBench-AA

    Workflow automation, penalized for guardrail violations

    • GPT Sol Latest: 62.6%
    • GPT 6.1 Sol Pro: —

  • AutomationBench-AA tasks completed

    Workflows finished end to end without a guardrail violation

    • GPT Sol Latest: 30.1%
    • GPT 6.1 Sol Pro: —

  • AA-Briefcasev1.1

    Agentic knowledge work, rated head to head

    • GPT Sol Latest: 1,359 Elo
    • GPT 6.1 Sol Pro: —

  • GDPval-AAv2.1

    Economically valuable occupational tasks, rated head to head

    • GPT Sol Latest: 1,450 Elo
    • GPT 6.1 Sol Pro: —

Document reasoning

  • GDP.pdf

    Professional reasoning over PDF documents, all-pass rate

    • GPT Sol Latest: 30.0%
    • GPT 6.1 Sol Pro: —

  • AA-LCRv1.1

    Reasoning across long documents

    • GPT Sol Latest: 83.3%
    • GPT 6.1 Sol Pro: —

  • MLCR-AA

    Long-context reasoning over medical records

    • GPT Sol Latest: 32.2%
    • GPT 6.1 Sol Pro: —

Reasoning and knowledge

  • Humanity’s Last Exam

    Expert-level questions across academic fields

    • GPT Sol Latest: 49.9%
    • GPT 6.1 Sol Pro: —

Coding

  • Terminal-Benchv4.0

    Practical software engineering in a terminal

    • GPT Sol Latest: 48.0%
    • GPT 6.1 Sol Pro: —

  • SciCode

    Scientific computing in Python

    • GPT Sol Latest: 53.2%
    • GPT 6.1 Sol Pro: —

Legacy evaluations

  • AA-LCR (unversioned)

    Long-context reasoning, earlier grading

    • GPT Sol Latest: 83.3%
    • GPT 6.1 Sol Pro: —

Scores from Artificial Analysis, updated Oct 26, 2026. GPT Sol 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
147.9 tok/s
Faster than 76% of 260 models
Time to first token
5.3 s
Quicker than 28% of 260 models
Prompt cache hits
85.8%
About $0.37 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-sol-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-sol-latest",
    messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)

OpenAI

Other OpenAI models, starting with the same family.