DeepSeek V4.1 Flash (1017) vs GLM 5.3 FlashX: price, context window and capabilities
DeepSeek V4.1 Flash (1017, deepseek/deepseek-v4.1-flash-1017) from DeepSeek and GLM 5.3 FlashX (z-ai/glm-5.3-flashx) from Z.ai are both multimodal language models on the OceanToken API. DeepSeek V4.1 Flash costs less per token than GLM 5.3 FlashX: $0.21 against $0.37 per 1M input tokens (43% less) and $0.84 against $1.25 per 1M output tokens (33% less). Both have a 1.05M-token context window (1,048,576 tokens). Both support tool calling, reasoning and image input; only DeepSeek V4.1 Flash also lists structured outputs; only GLM 5.3 FlashX also lists video input.
Side by side
| Spec | DeepSeek V4.1 Flash −40% | GLM 5.3 FlashX |
|---|---|---|
| Model | DeepSeek V4.1 Flash (1017)deepseek/ | GLM 5.3 FlashXz- |
| Publisher | DeepSeek | Z.ai |
| Kind | Text & vision | Text, vision & video |
| Context window | 1.05M tokens1,048,576 | 1.05M tokens1,048,576 |
| Input price | $0.21 / 1M tokens | $0.37 / 1M tokens |
| Output price | $0.84 / 1M tokens | $1.25 / 1M tokens |
| Cached input price | $0.006 / 1M tokens | $0.09 / 1M tokens |
| Discount (vs official, top tier) | −40% | — |
| Inputs | text and images | text, images and video |
| Outputs | text | text |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Structured outputs | Yes | Not listed |
About these prices
Which should you choose?
- Choose DeepSeek V4.1 Flash to spend less per token: 43% less for input and 33% less for output than GLM 5.3 FlashX.
- Context size does not separate them: both hold about 1.05M tokens.
- Choose DeepSeek V4.1 Flash if you need structured outputs: GLM 5.3 FlashX does not list it.
- Not sure? Call both with the same OceanToken API key and compare them on your own prompts; each request is billed per use from one prepaid balance.
Get API Key DeepSeek V4.1 Flash GLM 5.3 FlashX
Frequently asked questions
Which is cheaper, DeepSeek V4.1 Flash or GLM 5.3 FlashX?
DeepSeek V4.1 Flash. DeepSeek V4.1 Flash costs less per token than GLM 5.3 FlashX: $0.21 against $0.37 per 1M input tokens (43% less) and $0.84 against $1.25 per 1M output tokens (33% less). These are OceanToken starting prices per use; the OceanToken console always shows the current price.
Which has the larger context window, DeepSeek V4.1 Flash or GLM 5.3 FlashX?
Neither. Both have a 1.05M-token context window (1,048,576 tokens).
Can I call both DeepSeek V4.1 Flash and GLM 5.3 FlashX with one API key?
Yes. Both are on the OceanToken API at https://api.oceantoken.ai/v1: one API key and one prepaid balance call either model. Send the model id deepseek/deepseek-v4.1-flash-1017 or z-ai/glm-5.3-flashx.
Models and publishers
DeepSeek V4.1 Flash · GLM 5.3 FlashX · All DeepSeek models · All Z.ai models
More comparisons
DeepSeek V4.1 Flash vs Claude Opus 5.5 · DeepSeek V4.1 Flash vs Claude Fable 5.1 · DeepSeek V4.1 Flash vs Claude Opus 5 · DeepSeek V4.1 Flash vs GPT-6 Sol · All comparisons