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What is Ultramarine 1 Flash?

Ultramarine 1 Flash serves as a robust hosted large language model accessible to both developers and organizations through an API, designed specifically to enhance workflows driven by AI in professional environments. It supports a range of industries such as finance, law, consulting, and operations, aiding in activities like research, comprehensive analysis, and document preparation. Users can interact with the application by submitting prompts and can expect either streamed or standard responses, while also having access to reasoning controls, custom tool calls, and structured output options. The API additionally supports the processing of image inputs and is compatible with OpenAI's chat-completion formats as well as Anthropic Messages, promoting flexible integration across various platforms. Developers can connect with the model using multiple SDKs, including those from OpenAI and Anthropic, as well as the Claude Agent SDK and Claude Code, allowing for seamless collaboration with Paper Instruments' tools for Word, PowerPoint, and Excel. Furthermore, the billing system operates on a token-based model against a prepaid balance, providing users with flexible financial resource management. This model not only advances the automation of sophisticated professional tasks but also challenges the conventional limits of AI capabilities in workplace scenarios. As a result, it encourages organizations to rethink their approach to integrating AI technologies into their daily operations.

What is GPT-6.1 Sol?

GPT-6.1 Sol is OpenAI's upgraded Sol model for developers and professionals who need advanced reasoning and agentic capabilities without the higher cost of GPT-6 Astra. It is designed for coding, professional knowledge work, computer use, scientific research, factual question answering, and multi-step business workflows. OpenAI describes GPT-6.1 Sol as approaching GPT-6 Astra's intelligence across several important workloads while charging one-fifth of Astra's standard input and output token prices. On DeepSWE v1.1, which evaluates long-horizon software engineering in real codebases, GPT-6.1 Sol matches GPT-6 Astra at approximately one-fifth of the cost and exceeds GPT-6 Sol's best score by 6.4 percentage points. Its professional-work capabilities include understanding complex PDFs containing tables, charts, diagrams, and fine-print details across fields such as finance, healthcare, and legal work. On AutomationBench, GPT-6.1 Sol improves on GPT-6 Sol by 4.8 percentage points at the same reasoning setting and scores 2.2 points above Opus 5.5 at medium reasoning effort. Computer-use performance also advances significantly, with GPT-6.1 Sol outperforming GPT-6 Sol by seven percentage points on the OSWorld 2.0 offline set at maximum reasoning effort and coming within 2.1 points of GPT-6 Astra. For scientific research, the model can work with code and terminal tools on workflows involving data analysis, simulations, model fitting, and theorem proving, more than doubling GPT-6 Sol's Terminal-Bench Science 0.1 score at maximum effort. OpenAI also reports improved factual accuracy, including a reduction in the factual-error rate from 11.4% with GPT-6 Sol to 7.7% with GPT-6.1 Sol at low reasoning effort on its deliberately difficult factuality evaluation.

Media

Media

Integrations Supported

OpenAI

Integrations Supported

OpenAI
ChatGPT
ChatGPT Enterprise
ChatGPT Images
Dart
EaseMate AI
FastRouter
GPT-5.1-Codex-Max
GitHub
Lovable
Muse
Novelcrafter
Perplexity Computer
Prism
Simtheory
SpawnHQ
Swift
Vercel AI Gateway
Visual Studio Code
XML

API Availability

Has API

API Availability

Has API

Pricing Information

$0.15/1M input tokens
Usage is prepaid and billed per token: input costs $0.15 per 1M tokens, cached input costs $0.03 per 1M tokens, and output, including reasoning, costs $0.50 per 1M tokens.

Pricing Information

$2 per 1M tokens (input)
Input: $2 per 1 million tokens
Output: $10 per 1 million tokens
Cached Input: $0.10 per 1 million cached input tokens

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Not specified

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Paper Instruments

Date Founded

2025

Company Location

United States

Company Website

www.paperinstruments.com/ultramarine

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Categories and Features

AI Models

Not specified

Large Language Models

Not specified

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

AI Vision Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

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