DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further …
Model details →DeepSeek: DeepSeek V3.1 Terminus vs Qwen: Qwen Plus 0728 (thinking)
Qwen: Qwen Plus 0728 (thinking) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Qwen Plus 0728, based on the Qwen3 foundation model, is a 1 million context hybrid reasoning model with a balanced performance, speed, and cost combination.
Model details →Side-by-side comparison
| Capability | DeepSeek: DeepSeek V3.1 Terminus | Qwen: Qwen Plus 0728 (thinking) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 164K | 1M | 🏆 Qwen: Qwen Plus 0728 (thinking) |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.21 | $0.26 | 🏆 DeepSeek: DeepSeek V3.1 Terminus |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.79 | $0.78 | 🏆 Qwen: Qwen Plus 0728 (thinking) |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | — | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is DeepSeek: DeepSeek V3.1 Terminus better than Qwen: Qwen Plus 0728 (thinking)?
Qwen: Qwen Plus 0728 (thinking) wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between DeepSeek: DeepSeek V3.1 Terminus and Qwen: Qwen Plus 0728 (thinking)?
Input: $0.21 vs $0.26 per 1M tokens. Output: $0.79 vs $0.78 per 1M tokens.
What context windows do DeepSeek: DeepSeek V3.1 Terminus and Qwen: Qwen Plus 0728 (thinking) support?
DeepSeek: DeepSeek V3.1 Terminus supports up to 164K tokens. Qwen: Qwen Plus 0728 (thinking) supports up to 1M tokens.
Do both DeepSeek: DeepSeek V3.1 Terminus and Qwen: Qwen Plus 0728 (thinking) support tool calling?
DeepSeek: DeepSeek V3.1 Terminus: yes. Qwen: Qwen Plus 0728 (thinking): yes.