AfterQuery Step 3.5 Flash

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AfterQuery:

About

AfterQuery is an applied research platform designed to create high-quality training data for frontier artificial intelligence models by capturing how real experts think, reason, and solve problems in professional contexts. It focuses on transforming real-world work into structured datasets that go beyond simple outputs, encoding decision-making processes, tradeoffs, and contextual reasoning that traditional internet-sourced data cannot provide. It works directly with domain experts to generate supervised fine-tuning data, including prompt–response pairs and detailed reasoning traces, as well as reinforcement learning datasets with expert-designed prompts and grading frameworks that convert subjective judgment into scalable reward signals. It also builds custom agent environments across APIs and tools, enabling models to be trained and evaluated in realistic workflows, and captures computer-use trajectories that demonstrate how humans interact with software step by step.
Step 3.5 Flash:

About

Step 3.5 Flash is an advanced open source foundation language model engineered for frontier reasoning and agentic capabilities with exceptional efficiency, built on a sparse Mixture of Experts (MoE) architecture that selectively activates only about 11 billion of its ~196 billion parameters per token to deliver high-density intelligence and real-time responsiveness. Its 3-way Multi-Token Prediction (MTP-3) enables generation throughput in the hundreds of tokens per second for complex multi-step reasoning chains and task execution, and it supports efficient long contexts with a hybrid sliding window attention approach that reduces computational overhead across large datasets or codebases. It demonstrates robust performance on benchmarks for reasoning, coding, and agentic tasks, rivaling or exceeding many larger proprietary models, and includes a scalable reinforcement learning framework for consistent self-improvement.
AfterQuery:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
Step 3.5 Flash:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported
AfterQuery:

Audience

AI researchers, developers, and enterprises building advanced models who need high-quality, expert-driven training data to improve reasoning and real-world task performance
Step 3.5 Flash:

Audience

Developers, researchers, and AI engineers who want a powerful open source foundational AI model capable of fast, deep reasoning, coding assistance, and agentic task execution
AfterQuery:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
Step 3.5 Flash:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
AfterQuery:

API

Offers API Supported
Step 3.5 Flash:

API

Offers API Supported
AfterQuery:

Screenshots and Videos

Step 3.5 Flash:

Screenshots and Videos

AfterQuery:

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported
Step 3.5 Flash:

Pricing

Free
Free Version Supported
Free Trial Not Supported
AfterQuery:

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
Step 3.5 Flash:

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
AfterQuery:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Step 3.5 Flash:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
AfterQuery:

Company Information

AfterQuery
Founded: 2025
United States
www.afterquery.com
Step 3.5 Flash:

Company Information

StepFun
Founded: 2023
China
static.stepfun.com/blog/step-3.5-flash/
AfterQuery:

Alternatives

Step 3.5 Flash:

Alternatives

AfterQuery:
Step 3.5 Flash:
AfterQuery:
Step 3.5 Flash:
MiMo-V2-Flash

MiMo-V2-Flash

Xiaomi Technology
AfterQuery:
Turing

Turing

Turing.com
Step 3.5 Flash:
Beam

Beam

Reflection
AfterQuery:
Alignerr

Alignerr

Labelbox
Step 3.5 Flash:
Qwen3.5

Qwen3.5

Alibaba
AfterQuery:

Categories

Step 3.5 Flash:

Categories

AI Models Supported
Foundation Models Supported
AfterQuery:

Integrations

GitHub Not Supported
Hugging Face Not Supported
Model Context Protocol (MCP) Supported
ModelScope Not Supported
arXiv Not Supported
Step 3.5 Flash:

Integrations

GitHub Supported
Hugging Face Supported
Model Context Protocol (MCP) Not Supported
ModelScope Supported
arXiv Supported
AfterQuery:
Claim AfterQuery and update features and information
Claim AfterQuery and update features and information
Step 3.5 Flash:
Claim Step 3.5 Flash and update features and information
Claim Step 3.5 Flash and update features and information