OpenAI · Balanced
OpenAI o1 Pro
OpenAI's flagship series of reasoning models for solving hard problems. The o1 series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o1-pro model uses more compute to think harder and provide consistently better answers. o1 pro comes with a massive 100,000 word output window.
- Vision
- PDF input
- Input
- Text, Images
- Output
- Text
- Discovery tier
- Balanced
Pricing
USD per 1M tokens- Input
- $150.00
- Output
- $600.00
- Cache read
- $75.00
Reference prices as published by the model provider. API example
Specifications
- Context window
- 200K
- Max output
- 100K
- Average output (7 days)
- 34 tokens
- Longer than 2% of 468 models
Side by side
OpenAI o1 Pro compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| OpenAI o1 ProOpenAIThis model | GPT 6 LunaOpenAIRemove | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Discovery tier | Balanced | Efficient |
| Added | Jan 25, 2025 | Sep 22, 2026 |
| Limits | ||
| Context window | 200K | 1.05MBest |
| Max output | 100K | 128KBest |
| Average output | 34 tokens | 120 tokens |
| Pricing, USD per 1M tokens | ||
| Input | $150.00 | $0.10Best |
| Output | $600.00 | $0.50Best |
| Cache read | $75.00 | $0.01Best |
| Cache write | — | $0.13 |
| Performance | ||
| Throughput | — | 296.3 tok/s |
| Time to first token | — | 3.8 s |
| Request success (24h) | — | 99.7% |
| Benchmark indexes | ||
| Intelligence Index | 12.4 | 29.9Best |
| Capabilities | ||
| Reasoning | No | Yes |
| Tools | No | Yes |
| Vision | Yes | Yes |
| Structured output | No | Yes |
| PDF input | Yes | Yes |
| Reasoning effort | — | none, low, medium, high, xhigh, max |
Public evaluations
Benchmarks
Independent evaluation results, with how each score ranks among the models in the Noumen catalog.
- OpenAI o1 Pro
- GPT 6 Luna
Intelligence Index
- OpenAI o1 Pro12.4
- GPT 6 Luna29.9
OpenAI o1 Pro: Better than 26% of 326 scored models
Agentic work
AutomationBench-AA
Workflow automation, penalized for guardrail violations
- OpenAI o1 Pro: —
- GPT 6 Luna: 40.5%
AutomationBench-AA tasks completed
Workflows finished end to end without a guardrail violation
- OpenAI o1 Pro: —
- GPT 6 Luna: 10.2%
AA-Briefcasev1.1
Agentic knowledge work, rated head to head
- OpenAI o1 Pro: —
- GPT 6 Luna: 1,097 Elo
GDPval-AAv2.1
Economically valuable occupational tasks, rated head to head
- OpenAI o1 Pro: —
- GPT 6 Luna: 1,263 Elo
Document reasoning
GDP.pdf
Professional reasoning over PDF documents, all-pass rate
- OpenAI o1 Pro: —
- GPT 6 Luna: 13.8%
AA-LCRv1.1
Reasoning across long documents
- OpenAI o1 Pro: —
- GPT 6 Luna: 78.3%
MLCR-AA
Long-context reasoning over medical records
- OpenAI o1 Pro: —
- GPT 6 Luna: 18.3%
Reasoning and knowledge
Humanity’s Last Exam
Expert-level questions across academic fields
- OpenAI o1 Pro: —
- GPT 6 Luna: 28.3%
Coding
Terminal-Benchv4.0
Practical software engineering in a terminal
- OpenAI o1 Pro: —
- GPT 6 Luna: 2.5%
SciCode
Scientific computing in Python
- OpenAI o1 Pro: —
- GPT 6 Luna: 50.9%
Legacy evaluations
AA-LCR (unversioned)
Long-context reasoning, earlier grading
- OpenAI o1 Pro: —
- GPT 6 Luna: 78.3%
Scores from Artificial Analysis, updated Oct 26, 2026. Artificial Analysis
- OpenAI o1 Pro
- GPT 6 Luna
| Leaderboard | OpenAI o1 Pro | GPT 6 Luna |
|---|---|---|
| ARC-AGI-3 (Default harness) | Not in top 20 | #18 · 0.2% |
Ranks among Noumen catalog models on ARC Prize leaderboards. Only top-20 placements are listed.ARC Prize
- OpenAI o1 Pro
- GPT 6 Luna
| Leaderboard | OpenAI o1 Pro | GPT 6 Luna |
|---|---|---|
| SVG | Not in top 20 | #16 · 1250 |
Ranks among Noumen catalog models on Design Arena leaderboards. Only top-20 placements are listed.Design Arena
Developers
Use it through the API
Noumen’s API is OpenAI-compatible: any Chat Completions client works with a base URL and a key.
curl https://www.noumen.xyz/api/v1/chat/completions \
-H "Authorization: Bearer $NOUMEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/o1-pro",
"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/o1-pro",
messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)OpenAI
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