OpenAI · Balanced
GPT-4 Turbo
Can take in the largest messages (up to 300 pages of context), and all round seen as one of the best in class models.
- Vision
- Input
- Text, Images
- Output
- Text
- Discovery tier
- Balanced
Pricing
USD per 1M tokens- Input
- $10.00
- Output
- $30.00
Reference prices as published by the model provider. API example
Specifications
- Context window
- 128K
- Max output
- 4.1K
Side by side
GPT-4 Turbo compared
Specifications, prices, speed and benchmark scores next to each other. Benchmarks below show every compared model too.
| GPT-4 TurboOpenAIThis model | GPT 6.1 Sol ProOpenAIRemove | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Discovery tier | Balanced | Frontier |
| Added | Jan 1, 2024 | Sep 29, 2026 |
| Limits | ||
| Context window | 128K | 1.05MBest |
| Max output | 4.1K | 128KBest |
| Average output | — | 1.2K tokens |
| Pricing, USD per 1M tokens | ||
| Input | $10.00 | $2.00Best |
| Output | $30.00 | $10.00Best |
| Cache read | — | $0.10 |
| Cache write | — | $2.50 |
| Performance | ||
| Request success (24h) | — | 100.0% |
| Benchmark indexes | ||
| Intelligence Index | 7.0 | — |
| Coding Index | 21.5 | — |
| Capabilities | ||
| Reasoning | No | Yes |
| Tools | No | Yes |
| Vision | Yes | Yes |
| Structured output | No | Yes |
| PDF input | No | Yes |
| Reasoning effort | — | low, medium, high, xhigh, max |
Public evaluations
Benchmarks
Independent evaluation results, with how each score ranks among the models in the Noumen catalog.
- GPT-4 Turbo
- GPT 6.1 Sol Pro
Intelligence Index
- GPT-4 Turbo7.0
- GPT 6.1 Sol Pro—
GPT-4 Turbo: Better than 9% of 326 scored models
Indexes
Coding Index
Composite of the coding evaluations
- GPT-4 Turbo: 21.5
- GPT 6.1 Sol Pro: —
Reasoning and knowledge
Humanity’s Last Exam
Expert-level questions across academic fields
- GPT-4 Turbo: 3.1%
- GPT 6.1 Sol Pro: —
MMLU-Pro
Multi-subject knowledge and reasoning
- GPT-4 Turbo: 69.4%
- GPT 6.1 Sol Pro: —
Coding
LiveCodeBench
Recent competitive programming problems
- GPT-4 Turbo: 29.1%
- GPT 6.1 Sol Pro: —
Math
AIME
Competition mathematics
- GPT-4 Turbo: 15.0%
- GPT 6.1 Sol Pro: —
MATH-500
Competition math problems
- GPT-4 Turbo: 73.7%
- GPT 6.1 Sol Pro: —
Scores from Artificial Analysis, updated Oct 26, 2026.
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/gpt-4-turbo",
"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-4-turbo",
messages=[{"role": "user", "content": "Explain this stack trace."}],
)
print(reply.choices[0].message.content)OpenAI
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