morikomorizz/Step-3.7-Flash-MTP-GGUF

Overview

This repository contains the GGUF quantized files for stepfun-ai/Step-3.7-Flash.

• Original Model: stepfun-ai/Step-3.7-Flash
• Architecture: Step-3.7-Flash
• License: Apache 2.0
• MTP Support: Yes - From Base Model

Quant Type	Size	Description
IQ3_S	85-91 GB	Mixed Precision for Better Quality
IQ3_M	96-103 GB	Mixed Precision for Better Quality
IQ4_XS	109-117 GB	Mixed Precision for Better Quality

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[ModelPage]: https://static.stepfun.com/blog/step-3.7-flash/

1. Introduction

Step 3.7 Flash is a 198B-parameter sparse Mixture-of-Experts (MoE) vision-language model that combines a 196B-parameter language backbone with a 1.8B-parameter vision encoder for native image understanding. Engineered for high-frequency production workloads, it activates approximately 11B parameters per token and delivers a throughput of up to 400 tokens per second. Step 3.7 Flash supports a 256k context window and offers three selectable reasoning levels (low, medium, and high) so developers can easily balance speed, cost, and cognitive depth.

We built Step 3.7 Flash for developers who need to scale agentic workflows that combine perception, search, and reasoning. It is designed to handle intensive tasks such as parsing massive financial reports in one pass, running multi-step search loops with cross-source verification, or operating concurrent coding agents in high-throughput pipelines.

2. Capabilities & Performance

Multimodal Perception and Verification

The model delivers top-tier visual intelligence, securing first place on SimpleVQA (Search) with a 79.2 and achieving frontier parity on V* (Python) at 95.3. These metrics reflect strong visual grounding and retrieval-augmented reasoning beyond basic image description. The model accurately processes dense visual interfaces, such as UI wireframes, application GUIs, and data charts, to map them into structured code. When it encounters an incomplete visual asset, it can independently identify missing data and execute lookups to verify context before returning a factually verified conclusion.

Workflow Integrity and Tool Orchestration

Execution reliability is critical for autonomous agents. Step 3.7 Flash leads the ClawEval-1.1 benchmark with a score of 67.1, which significantly outperforms the next closest competitor at 59.8. This performance demonstrates high resistance to adversarial traps and strict adherence to system policies during multi-turn orchestration. Backed by scores of 49.5 on Toolathlon and 48.1 on HLE w. Tool, this profile ensures high trajectory integrity. Step 3.7 Flash reliably interacts with external APIs and executes long-horizon workflows without drifting from instructions or violating system constraints.

Code Engineering and Professional Baselines

Step 3.7 Flash is built for live engineering tasks and secured a definitive second-place finish on SWE-Bench PRO with a score of 56.3. It can independently trace multi-file repositories, isolate bugs from raw issue reports, and generate functional patches that pass automated unit tests. While evaluations like Terminal-Bench 2.1 (59.5) and GDPVal-AA (45.8) show clear areas for future optimization compared to the absolute peak of the cohort, they establish a dependable baseline for system interactions and structured professional deliverables.

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How to Use

These GGUF files are fully compatible with llama.cpp and popular graphical interfaces like LM Studio.

using llama.cpp CLI:

./llama-cli -m /path/to/model/Step-3.7-Flash-IQ4_XS.gguf \
  -p "Hello, how are you?" \
  -sys "You are a helpful AI" \
  -n 4096 \
  -c 8192

using llama-server :

./llama-cli -m /path/to/model/Step-3.7-Flash-IQ4_XS.gguf \
  --host 0.0.0.0 \
  --port 8080