DeepSeek V4.1 Flash vs GLM-5.3-FlashX
Price and specs side by side · USD per 1M tokens · verified 2026-10-23
// side by side
| metric | DeepSeek V4.1 Flash | GLM-5.3-FlashX |
|---|---|---|
| input / 1M | $0.20 | $0.37 |
| output / 1M | $0.60 | $1.25 |
| blended (3:1) | $0.30 | $0.59 |
| cache read / 1M | $0.006 | $0.075 |
| context | 1.05M | 1M |
| max output | 384K | 131.1K |
| input types | text · image | text · image · video · pdf |
| reasoning | yes | yes |
| tool calling | yes | yes |
| structured output | yes | yes |
| open weights | yes | yes |
| released | 2026-09-10 | 2026-09-18 |
| knowledge cutoff | 2025-05 | n/a |
| lab | DeepSeek | Z.AI (Zhipu) |
// monthly cost scenarios
| workload | tokens in / out | DeepSeek V4.1 Flash | GLM-5.3-FlashX |
|---|---|---|---|
| Chatbot | 10M / 2M | $3.20 | $6.20 |
| RAG app | 50M / 5M | $13.00 | $24.75 |
| Coding agent | 20M / 10M | $10.00 | $19.90 |
// verdict
- DeepSeek V4.1 Flash is 49.2% cheaper than GLM-5.3-FlashX on a blended 3:1 input/output basis.
- DeepSeek V4.1 Flash has the larger context window (1.05M vs 1M tokens).
- Chatbot (10M input / 2M output tokens per month): DeepSeek V4.1 Flash costs $3.20 vs $6.20 for GLM-5.3-FlashX, saving $3.00 per month.
- RAG app (50M input / 5M output tokens per month): DeepSeek V4.1 Flash costs $13.00 vs $24.75 for GLM-5.3-FlashX, saving $11.75 per month.
- Coding agent (20M input / 10M output tokens per month): DeepSeek V4.1 Flash costs $10.00 vs $19.90 for GLM-5.3-FlashX, saving $9.90 per month.
// DeepSeek V4.1 Flash or GLM-5.3-FlashX: which one to choose
- Choose DeepSeek V4.1 Flash for cost-sensitive, high-volume workloads.
- Choose DeepSeek V4.1 Flash for long documents and large codebases (1.05M-token context).