Roboflow
Z.ai

Z.ai: GLM 5.3 Flash

GLM 5.3 Flash Overview

GLM-5.3-Flash is the first natively multimodal model in Z.ai's GLM-5 series, a mixture-of-experts transformer with roughly 320 billion total parameters and 18 billion activated per token. It routes each token through 8 of 288 experts across 45 language layers that interleave KDA linear attention with sparse multi-head latent attention, and pairs them with a 24-layer vision encoder that handles image and video input. The checkpoint declares a maximum context length of 1,048,576 tokens, ships in native FP8, and includes a multi-token prediction draft layer for speculative decoding. Z.ai reports that the hybrid attention design reduces attention computation by 3.01x and KV cache size by 4.44x relative to GLM-5.3.

The model starts from a newly trained base built on a 30 trillion token multimodal pre-training corpus and adopts Manifold-Constrained Hyper-Connections to improve scaling efficiency. Vision is integrated into the coding and agent loop, so the model can inspect interfaces, rendered output, and images while operating across code, browsers, and graphical user interfaces. Z.ai reports scores of 84.3 on Terminal-Bench 2.1, 63.4 on DeepSWE 1.1, 55.3 on Humanity's Last Exam with tools, and 48.8 on AutomationBench, and the model exposes low, high, and max thinking modes.

GLM 5.3 Flash Interactive Demo

Model settings

Thinking level

Max output tokens

Default 65,536 · max 65,536

Sign in to adjust thinking and output length per run.

Results appear here. Add an image or pick an example to run GLM 5.3 Flash.

GLM 5.3 Flash Details & Performance

Details

Resources

Vision Tasks

CaptioningChart Question AnsweringClassificationDocument Question AnsweringImage TaggingMulti-Label ClassificationOCRObject DetectionVision LanguageVisual Question Answering

Features

Foundation VisionLLMs with Vision CapabilitiesMultimodal Vision

Usage

Past 30 Days

Performance

Avg. Latency

GLM 5.3 Flash Vision Evals

Vision Evals is Roboflow's ground-truth benchmark: every model runs the same real-world samples across five vision tasks, and answers are scored against ground truth.

Evals updated October 8, 2026Pricing updated October 11, 2026

Overall score#42 of 61
55.8%
Avg cost / sample#12 of 61
$0.0006
Avg speed / sample#22 of 61
9.29s
Avg tokens / sample
3.1K

Strengths and weaknesses

GLM 5.3 Flash averages 55.8% across the five Vision Evals tasks, ranking #42 of 61 models overall.

Its weakest relative showing is Object Detection, ranking #53 of 61 at 33.1%.

At $0.0006 per sample it is the 12th cheapest of the 61 benchmarked models, and its average inference time of 9.3s per sample makes it the 22nd fastest.

Performance profile

Field medianGLM 5.3 Flash

Field medians: Object Detection 54.3%, Counting 62.6%, Identification 84.4%, OCR 61.3%, Reasoning 57.6%.

Results by task

TaskScoreField (0 to 100)RankCost / sampleSpeed
Object Detection
33.1%
#53 of 61$0.00089.10s
Counting
55.4%
#39 of 61$0.00026.20s
Identification
84.4%
#29 of 61$0.00026.45s
OCR (low)
55.4%
#35 of 44$0.000711.12s
Single value
47.4%
Transcription
81.5%
Structured JSON
72.0%
Text localization
18.6%
OCR (high)
55.3%
#39 of 44$0.001124.14s
Single value
50.9%
Transcription
72.2%
Structured JSON
72.0%
Text localization
14.5%
Reasoning (low)
51.0%
#37 of 61$0.00024.44s
Reasoning (high)
59.6%
#38 of 48$0.00035.38s
  • Thinking longer changes nothing: the same ocr score at high effort for 1.6x the cost and 2.2x the latency.
  • Thinking longer helps: 8.6 points higher on reasoning at high effort for 1.2x the cost and 1.2x the latency.

Price vs. performance

Score vs. cost

Overall benchmark score against estimated cost per sample, on a log scale. Upper-left is the sweet spot: high quality at low cost.

60 models on the current benchmark · scores and efficiency pooled across all five tasks at low effort · GLM 5.3 Flash highlighted

GLM 5.3 Flash scores are from a single run per task; a three-run re-run under the current protocol is pending · Methodology

View all Vision Evals →

GLM 5.3 Flash Pricing

GLM 5.3 Flash costs $0.150 per 1M input tokens and $0.500 per 1M output tokens.

Input$0.150 / 1M tokens
Output$0.500 / 1M tokens
Cached input$0.030 / 1M tokens

Pricing updated Oct 11, 2026

Alternatives to GLM 5.3 Flash

Other models worth comparing for similar use cases.

MiMo V2.6 Flash
MiMo-V2.6-Flash is the efficiency-oriented checkpoint of Xiaomi's MiMo-V2.6 series, a natively omnimodal foundation model that accepts text, image, video, and audio in a single model and supports a one million token context window. The language backbone is a sparse mixture-of-experts transformer with roughly 309 billion total parameters and 15 billion activated per token, organized as 48 layers with 256 routed experts and top-8 routing. It uses a hybrid attention scheme that interleaves sliding window attention with global attention layers to cut key-value cache cost on long sequences, and pairs the backbone with a vision encoder, an audio encoder, and an audio tokenizer, plus a multi-token prediction module and a draft model for faster decoding.Training emphasizes large scale reinforcement learning on verifiable, long-horizon tasks, with RL compute, environment diversity, and grader compute scaled together in a single mixed run. Xiaomi reports gains during RL on SWE-bench Verified, Terminal Bench, a cybersecurity benchmark, and an internal visual coding benchmark, reflecting a focus on agentic coding, computer use, and multimodal document and screen understanding rather than single turn chat.
Google
Gemini 3.8 Flash
Gemini 3.8 Flash is a natively multimodal reasoning model in Google's Gemini 3 series, positioned as the speed and cost oriented Flash tier while targeting long-horizon software engineering, autonomous agents, and enterprise workflows. It accepts text, images, video, audio, and PDF documents in a single request and returns text, with an input limit of 1,048,576 tokens and an output limit of 65,536 tokens. Thinking is configurable at low, medium, and high levels, and the model supports function calling, code execution, structured outputs, context caching, search and Maps grounding, file search, and computer use in preview. Image generation, audio generation, and the Live API are not supported.On vision oriented evaluations the model reports 86.2% on CharXiv Reasoning for chart and figure synthesis and 87.8% on LVBench for long video understanding in agentic mode, alongside 90.8% on Terminal-Bench 2.1 and 61.6% on SWE-Bench Pro for coding. Following Gemini API conventions, it can localize objects by emitting bounding boxes as [ymin, xmin, ymax, xmax] integers normalized to a 0 to 1000 range, which supports prompt driven detection and grounding in addition to captioning, document parsing, and visual question answering. The knowledge cutoff is March 2026, though coverage in some domains reflects the January 2025 cutoff shared across the Gemini 3 family.
Qwen
Qwen3.7 Flash
Qwen3.7 Flash is the low-latency, cost-oriented tier of Alibaba's Qwen3.7 series, a vision-language reasoning model that accepts interleaved text and image input and returns text. It is built as a hybrid thinking model: like the rest of the Qwen3.7, Qwen3.6, and Qwen3.5 families served through Alibaba Cloud Model Studio, it can either emit an explicit reasoning trace before answering or respond directly, with thinking behavior controlled by an enable_thinking switch that defaults to on for the Qwen3.7 generation. The model exposes a context window of roughly one million tokens and a maximum generation length of 65,536 tokens, which allows long multi-image sequences, long documents, and extended agent trajectories to be held in a single request.Functionally, Qwen3.7 Flash targets multimodal agent workloads rather than pure chat. Reported strengths include object recognition, spatial understanding, and perception of real-world scenes, alongside visual coding, search, and computer-use style interaction where the model reads screen content and reasons over interface state. Weights are not published; the model is a proprietary endpoint positioned below Qwen3.7 Plus and Qwen3.7 Max in the same series, and it supports function calling and tool use for agentic pipelines.
OpenAI
GPT-5.6 Terra
GPT-5.6 Terra is the mid-tier reasoning model in OpenAI's GPT-5.6 family, which also includes the flagship Sol and the lightweight Luna. Introduced in a limited preview on June 26, 2026, and made broadly available on July 9, 2026, Terra accepts text and image input and produces text output, supporting vision, function calling, tool use, and agentic workflows. It is designed as a balanced option for everyday professional and production workloads — including coding assistance, document analysis, customer support, and multi-step agent tasks — where both output quality and cost efficiency matter. OpenAI positions Terra as delivering performance competitive with GPT-5.5 at approximately half the price, with a context window of around 1,050,000 tokens. On Terminal-Bench 2.1, Terra scores 84.3%, matching Claude Fable 5 on that benchmark. Under OpenAI's Preparedness Framework, Terra is rated High for cybersecurity and biological capabilities, meaning it demonstrates meaningful capability in those domains without reaching the Critical threshold.GPT-5.6 introduces a new naming convention in which the generation number (5.6) is paired with a durable capability tier name (Sol, Terra, or Luna), allowing each tier to advance on its own schedule. Terra carries the API identifier gpt-5.6-terra and supports the same reasoning effort controls available across the family, including adjustable reasoning depth. The model includes prompt caching with explicit cache breakpoints and a 30-minute minimum cache life, with cache writes billed at 1.25x the uncached input rate and cache reads receiving a 90% discount. GPT-5.6 Terra is a proprietary, closed-weights model served through the OpenAI API, Codex, and ChatGPT.
Anthropic
Claude Sonnet 5.5
Claude Sonnet 5.5 is a proprietary multimodal language model from Anthropic and the second release in the Claude 5.5 family, following Claude Opus 5.5. It accepts interleaved text and image input and returns text, operating with a 1M token context window and a maximum output of 128K tokens per request. The model uses adaptive thinking by default, allocating variable reasoning effort per request rather than exposing a manual extended thinking toggle, and its training data cutoff is June 2026. Anthropic positions it as a faster, lower cost complement to Opus 5.5 for well scoped everyday tasks, bug fixing, and producing documents, slides, and spreadsheets.On visual and agentic evaluations reported at launch, Sonnet 5.5 scores 61.6% on Chartography, a chart recognition test, compared with 15.6% for Claude Sonnet 5, and 80.1% on OSWorld 2.1, a computer use benchmark measuring screenshot driven control of a desktop environment, compared with 57.0% for Sonnet 5. It reports 70.6% on Terminal-Bench 4.0 for agentic coding. Anthropic describes it as the first Sonnet model able to complete Pokemon Red from screenshots alone, and it generates output more than 30% faster than Sonnet 5 while using fewer tokens for equivalent work.
Google
Gemini 3.7 Flash
Gemini 3.7 Flash is a proprietary multimodal model from Google, positioned in the Flash branch of the Gemini 3 series that trades some of the capacity of the larger Pro models for lower latency and lower cost per token. It accepts interleaved text and image input alongside other modalities handled by the Gemini family and returns text, and it continues the series pattern of exposing a configurable thinking budget so that reasoning effort can be scaled up for harder problems or reduced for high throughput extraction, routing and classification work. The model is announced roughly three weeks after Gemini 3.6 Flash, part of an unusually fast iteration cadence within the Flash line.Google reports gains concentrated in agentic coding and front end generation, citing a WebDev Arena Elo of 1588 for this release compared with 1538 for the preceding Flash model, and describes it as producing more functional layouts and more feature complete applications in fewer prompts. Weights are not published and the architecture, parameter count and training corpus are undisclosed, consistent with prior Gemini releases. Visual capability follows the Flash lineage, covering image and document understanding, chart and diagram interpretation, text recognition in images, and general visual question answering.

GLM 5.3 Flash License

MIT · Permissive license

GLM 5.3 Flash is released under MIT, a permissive license. The GLM 5.3 Flash license lets you use, modify, and sell work built on the model, with the copyright notice as the only real obligation and no requirement to open-source related code changes.

Commercial use
Permitted with no separate commercial license. No usage caps, revenue thresholds, or field-of-use limits apply to GLM 5.3 Flash.
Modification
Permitted. You can fine-tune or rewrite GLM 5.3 Flash and keep the result closed-source.
Redistribution
Permitted. Include the original copyright and permission notice in copies or substantial portions of the work.

MIT grants no explicit patent license and disclaims all warranties. If patent exposure is a concern for your deployment, review it with counsel before launch.

Read the full MIT license ↗

Do I need a commercial license for GLM 5.3 Flash?

No commercial license is needed for GLM 5.3 Flash: permissive terms let you keep related code private while deploying commercially.

Do not hesitate to reach out with questions for your commercial project — our team will help you start solving business problems on the first call. See Roboflow commercial licensing for the models included in each plan.

Talk to sales

This model is released under the MIT License, a short and permissive open-source license that allows commercial use, modification, and redistribution.

Yes. Under the terms of the MIT license, you can freely use this model for commercial purposes. You must retain the copyright notice and license text when redistributing.

License information is provided as a guide and is not legal advice.

Frequently Asked Questions About GLM 5.3 Flash Vision

Yes. GLM 5.3 Flash accepts image input and handles OCR, object counting, identification, visual reasoning, and object detection. On Roboflow's Vision Evals its strongest task is Identification at 84.4% (#29 of 61 at low effort). You can test it on your own image in the demo above.

Yes. it scores 55.4% (#35 of 44 at low effort) on Vision Evals OCR, which covers single readings, full transcriptions, structured JSON, and locating text with boxes. Within that, full transcriptions score 81.5%, and returning the fields of a label or form as JSON scores 72.1%.

Not its strength. On Vision Evals, GLM 5.3 Flash scores 33.1% mAP@50 on object detection (#53 of 61 at low effort) and 55.4% judge-graded accuracy on object counting. For production counting or precise localization, pairing it with a specialized detector like RF-DETR or your own trained model in a Roboflow Workflow is usually more reliable: detect the objects, then count the detections.

On our benchmark's task mix, GLM 5.3 Flash averages $0.0006 per sample at $0.15 per 1M input and $0.50 per 1M output tokens (#12 of 61 on cost), with an average speed of 9.3s per sample across the benchmark. Actual cost depends on your images and prompts.

On the overall Vision Evals ranking, GLM 5.3 Flash sits #42 of 61 at 55.8%, just behind Kimi K3 (56%) and just ahead of Qwen3.8 Flash Next (55.3%). See the full side-by-side: GLM 5.3 Flash vs Kimi K3.