DeepSeek-V4-Flash-Vision-Exp vs GLM-5.1
DeepSeek-V4-Flash-Vision-Exp significantly outperforms across most benchmarks. DeepSeek-V4-Flash-Vision-Exp is 6.5x cheaper per token.
DeepSeek · Zhipu AI · Updated for 2026
Which is better?
DeepSeek-V4-Flash-Vision-Exp outperforms in 1 benchmarks (NL2Repo), while GLM-5.1 is better at 0 benchmarks. DeepSeek-V4-Flash-Vision-Exp significantly outperforms across most benchmarks.
On price, DeepSeek-V4-Flash-Vision-Exp is roughly 6.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
DeepSeek-V4-Flash-Vision-Exp also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose DeepSeek-V4-Flash-Vision-Exp
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- cost matters — it's about 6.5x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
- you want the most recent training data — it shipped Aug 2026
Choose GLM-5.1
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V4-Flash-Vision-Exp outperforms in 1 benchmarks (NL2Repo), while GLM-5.1 is better at 0 benchmarks.
DeepSeek-V4-Flash-Vision-Exp significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-V4-Flash-Vision-Exp ($0.22/1M tokens) is 6.4x cheaper than GLM-5.1 ($1.40/1M tokens).
For output processing, DeepSeek-V4-Flash-Vision-Exp ($0.66/1M tokens) is 6.7x cheaper than GLM-5.1 ($4.40/1M tokens).
In conclusion, GLM-5.1 is more expensive than DeepSeek-V4-Flash-Vision-Exp.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
DeepSeek-V4-Flash-Vision-Exp accepts 1,048,576 input tokens compared to GLM-5.1's 200,000 tokens. DeepSeek-V4-Flash-Vision-Exp can generate longer responses up to 393,216 tokens, while GLM-5.1 is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
DeepSeek-V4-Flash-Vision-Exp supports multimodal inputs, whereas GLM-5.1 does not.
DeepSeek-V4-Flash-Vision-Exp can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V4-Flash-Vision-Exp
GLM-5.1
Release Timeline
When each model was launched
DeepSeek-V4-Flash-Vision-Exp was released on 2026-08-21, while GLM-5.1 was released on 2026-04-07.
DeepSeek-V4-Flash-Vision-Exp is 5 months newer than GLM-5.1.
Aug 21, 2026
3 days ago
4mo newerApr 7, 2026
4 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
DeepSeek-V4-Flash-Vision-Exp is available from DeepSeek. GLM-5.1 is available from FriendliAI, ZAI.
DeepSeek-V4-Flash-Vision-Exp
GLM-5.1
Outputs Comparison
Judge for yourself.
Run your own prompts against DeepSeek-V4-Flash-Vision-Exp and GLM-5.1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about DeepSeek-V4-Flash-Vision-Exp vs GLM-5.1.