2 min readfrom Machine Learning

Introducing ASCIITermDraw Bench | Testing the ability of VLMs to Generate and Edit ASCII [P]

Our take

Can AI truly visualize complex concepts beyond code? Introducing ASCIITermDraw-Bench, a new benchmark evaluating Vision Language Models' ability to generate and edit diagrams using simple ASCII characters. This innovative benchmark addresses a critical gap, moving beyond coding and reasoning to assess diagrammatic accuracy—a surprisingly challenging task. Featuring 80 tasks spanning network topologies to software architecture, ASCIITermDraw-Bench offers a rigorous evaluation with structural and semantic scoring. See current leaderboards, including Gemma-4-31B-IT at 73.8%, and explore the methodology on Hugging Face.
Introducing ASCIITermDraw Bench | Testing the ability of VLMs to Generate and Edit ASCII [P]

The emergence of ASCIITermDraw-Bench signals a fascinating, and perhaps understated, shift in how we evaluate vision-language models (VLMs). While much of the current focus rightly centers on coding prowess, mathematical reasoning, and broader logical capabilities, this benchmark directly addresses a surprisingly practical need: the ability of AI to visually represent complex systems using simple ASCII characters. The question posed—do we really need image generators to convey architectural diagrams, topologies, or even cluster configurations?—is a pertinent one, especially for those of us who’ve spent countless hours crafting visual aids with pen and paper, or rudimentary text-based tools. It highlights a potential pathway toward more intuitive interaction with AI assistants, allowing creators to easily communicate nuanced ideas and request modifications without the overhead of complex image generation pipelines. Related discussions around the future of AI models, like those explored in I just read LeCun’s recent thoughts on world models. Thoughts on JEPA as a path forward?, suggest that a focus on fundamental representations, rather than purely generative capabilities, might prove crucial for building robust and adaptable AI systems. This benchmark provides a concrete way to test and measure that fundamental understanding.

The meticulous design of ASCIITermDraw-Bench is particularly noteworthy. The four categories—basic layouts, network topologies, software architecture diagrams, and image-conditioned editing—cover a wide range of common use cases. The inclusion of the image-conditioned editing aspect is clever, demanding not just generative ability but also the capacity for precise, targeted modifications while preserving existing elements. The evaluation methodology, incorporating both a structural score and a semantic score judged by an LLM (with redundancy built in to reduce bias), is a significant improvement over simpler “does it look right?” assessments. It's a step towards establishing a more rigorous and reliable metric for assessing VLM performance in this niche, but vital, area. In parallel, conversations surrounding ARR scores, as seen in [ARR 2026 Meta Review score [D]](https://www.reddit.com/post/arr-2026-meta-review-score-d-cmrt6c71f03j5djxx4duigniv), underscore the importance of standardized benchmarks and objective evaluation methods across the AI landscape, driving progress and accountability. The current leaderboard, showing Gemma-4-31B-IT leading the pack, provides an early glimpse into the relative strengths of different models.

The significance of this development extends beyond academic benchmarking. Consider the implications for fields like DevOps, system administration, and software engineering, where quick, clear diagrams are often essential for troubleshooting, communication, and documentation. Imagine an AI assistant capable of instantly generating a visual representation of a network topology based on a simple text description, or accurately editing a system diagram in response to a verbal request. This could dramatically streamline workflows and reduce cognitive load. While the use of ASCII might seem archaic in an era of high-resolution graphics, its simplicity and universality offer compelling advantages. ASCII diagrams are easily shared, rendered across a wide range of platforms, and require minimal processing power—making them ideal for situations where bandwidth or computational resources are limited. The fact that Strands Agents are currently being explored as a tool to help facilitate these interactions, as discussed in Podcast: Strands Agents with Clare Liguori, further reinforces the potential of this approach.

Looking ahead, it will be fascinating to observe how ASCIITermDraw-Bench influences the development of VLMs. Will we see a concerted effort to improve performance on this benchmark, or will it remain a relatively niche area of focus? The real test will be whether this ability to generate and edit ASCII diagrams translates into tangible productivity gains for users. Perhaps the most interesting question is whether this focus on fundamental visual representation could inspire a broader rethinking of how we design AI interfaces—moving away from purely generative approaches toward systems that prioritize clarity, precision, and ease of modification. The clarity provided by this benchmark, and the promise it holds, suggests that the humble ASCII character might play a surprisingly important role in the future of AI interaction.

Introducing ASCIITermDraw Bench | Testing the ability of VLMs to Generate and Edit ASCII [P]

ASCIITermDraw-Bench: Can a Model Actually Draw in ASCII?

Do we really need a image generator to relay our thoughts about -

  • an architecture?
  • a topology?
  • a cluster og N nodes?

Is it possible to let our AI assistants, easily absorb and understand and make possible changes easily relayed to them by us, the creators without much hassle?

The answer could be: simple, plain-old ASCII images

With this, introducing ASCIITermDraw, a benchmark with which we aim to evaluate SOTA Vision Language Models on their ability to follow instructions, recognize, and draw ASCII-based images.

Most benchmarks focus on coding, mathematics, and reasoning, but ASCIITermDraw-Bench evaluates a different capability: whether a model can create accurate diagrams using only plain text, use ASCII -- freely.

This is more difficult than it may seem. Models can often describe a diagram correctly, but arranging boxes, labels, connections, and arrows with precise layout is a separate challenge.

The benchmark includes 80 tasks across four areas:

  • Basic Box and layouts
  • Network topologies
  • Software architecture diagrams
  • Image-conditioned diagram editing, where a model must modify a provided diagram while preserving everything it was not asked to change

Tasks span multiple difficulty levels and follow a consistent format, making results comparable across categories and models.

Evaluation

Each response receives two scores:

  • A structural score that verifies required labels, edges, entities, and relationships
  • A semantic score produced by an LLM judge, evaluated five times per task to reduce judge variability

Results are aggregated across all 80 tasks, with a 95% confidence interval calculated for the final score. This provides a more rigorous measure than relying on whether a diagram simply appears correct.

The current leaderboard is:

  • Gemma-4-31B-IT — 73.8% (±4.1)
  • Qwen3.7-Plus — 70.2% (±4.6)
  • Kimi-K2.6 — 61.8% (±6.0)
  • MiniMax-M3 — 59.5% (±6.3)
  • Qwen3.5-9B — 47.0% (±6.4)
  • Ternary-Bonsai-27B — 45.9% (±7.1)

Explore the Benchmark

Twelve example tasks and the complete methodology are publicly available on Hugging Face. You can review the task format, examine the evaluation process, and run the benchmark yourself.

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