DeepSeek: DeepSeek V3.1

DeepSeek V3.1 is a text-in, text-out model from DeepSeek with a 163,840-token context window and up to 32,768 tokens of completion. It supports tool use and reasoning, which makes it applicable to agentic workflows and multi-step tasks. Structured output support is unconfirmed, so developers who depend on that feature should verify before committing. On the comparison side, the pricing is low relative to many frontier competitors, at $0.21 per million input tokens and $0.79 per million output tokens, making it worth considering for high-volume text workloads where cost matters. The tradeoff is that no independent benchmark coverage currently exists for this model, so there is no third-party performance data to weigh against alternatives. Buyers who need verified quality metrics before deploying should wait for independent evaluations; those comfortable running their own evals on a budget-friendly option have a reasonable candidate here.