GPT-5.1

GPT-5.1

OpenAI
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About

GPT-5.1 is the latest update in the GPT-5 series, designed to make ChatGPT dramatically smarter and more conversational. The release introduces two distinct model variants: GPT-5.1 Instant, which is described as the most-used model and is now warmer, better at following instructions, and more intelligent; and GPT-5.1 Thinking, which is the advanced reasoning engine that’s been tuned to be easier to understand, faster on straightforward tasks, and more persistent on complex ones. Users' queries are now routed automatically to the variant best-suited to the task. The update emphasizes not just improved raw intelligence but also enhanced communication style; the models are tuned to be more natural, enjoyable to talk to, and better aligned with user intents. The system card addendum notes that GPT-5.1 Instant uses “adaptive reasoning” that lets it decide when to think more deeply before responding, while GPT-5.1 Thinking adapts its thinking time accurately to the question at hand.

About

GigaChat 3 Ultra is a 702-billion-parameter Mixture-of-Experts model built from scratch to deliver frontier-level reasoning, multilingual capability, and deep Russian-language fluency. It activates just 36 billion parameters per token, enabling massive scale with practical inference speeds. The model was trained on a 14-trillion-token corpus combining natural, multilingual, and high-quality synthetic data to strengthen reasoning, math, coding, and linguistic performance. Unlike modified foreign checkpoints, GigaChat 3 Ultra is entirely original—giving developers full control, modern alignment, and a dataset free of inherited limitations. Its architecture leverages MoE, MTP, and MLA to match open-source ecosystems and integrate easily with popular inference and fine-tuning tools. With leading results on Russian benchmarks and competitive performance on global tasks, GigaChat 3 Ultra represents one of the largest and most capable open-source LLMs in the world.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers, data scientists and enterprise users wanting a solution to handle both smooth interactions and deep reasoning tasks

Audience

GigaChat 3 Ultra is designed for advanced AI teams, researchers, and enterprises seeking a massive open-source frontier model with top-tier reasoning, multilingual strength, and deep Russian-language mastery

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com/index/gpt-5-1/

Company Information

Sberbank
Founded: 1841
Russia
giga.chat

Alternatives

Alternatives

DeepSeek-V2

DeepSeek-V2

DeepSeek
GigaChat

GigaChat

Sberbank
Kimi K2

Kimi K2

Moonshot AI
GPT-5.2

GPT-5.2

OpenAI
Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
Olmo 3

Olmo 3

Ai2
Mistral Large 3

Mistral Large 3

Mistral AI

Categories

Categories

Integrations

AiAssistWorks
Augment Code
Brokk
ChatGPT Enterprise
Codex CLI
Devin
Ghost
GitHub Copilot
Go
Google Drive
Java
JavaScript
Kotlin
Microsoft Copilot Studio
Microsoft Foundry Models
Node.js
Python
TypeScript
Visual Studio Code
Wazzap AI

Integrations

AiAssistWorks
Augment Code
Brokk
ChatGPT Enterprise
Codex CLI
Devin
Ghost
GitHub Copilot
Go
Google Drive
Java
JavaScript
Kotlin
Microsoft Copilot Studio
Microsoft Foundry Models
Node.js
Python
TypeScript
Visual Studio Code
Wazzap AI
Claim GPT-5.1 and update features and information
Claim GPT-5.1 and update features and information
Claim GigaChat 3 Ultra and update features and information
Claim GigaChat 3 Ultra and update features and information