Cogito v2.1 671B MoE represents one of the strongest open models globally, matching performance of frontier closed and open models. This model is trained using self play with reinforcement learning to reach state-of-the-art performance on m…
Model details →Deep Cogito: Cogito v2.1 671B vs Perplexity: Sonar Deep Research
Deep Cogito: Cogito v2.1 671B wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Sonar Deep Research is a research-focused model designed for multi-step retrieval, synthesis, and reasoning across complex topics. It autonomously searches, reads, and evaluates sources, refining its approach as it gathers information. This…
Model details →Side-by-side comparison
| Capability | Deep Cogito: Cogito v2.1 671B | Perplexity: Sonar Deep Research | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 128K | 128K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $1.25 | $2.00 | 🏆 Deep Cogito: Cogito v2.1 671B |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $1.25 | $8.00 | 🏆 Deep Cogito: Cogito v2.1 671B |
| Tool / function calling First-class support for emitting structured tool calls. | — | — | 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 Deep Cogito: Cogito v2.1 671B better than Perplexity: Sonar Deep Research?
Deep Cogito: Cogito v2.1 671B wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Deep Cogito: Cogito v2.1 671B and Perplexity: Sonar Deep Research?
Input: $1.25 vs $2.00 per 1M tokens. Output: $1.25 vs $8.00 per 1M tokens.
What context windows do Deep Cogito: Cogito v2.1 671B and Perplexity: Sonar Deep Research support?
Deep Cogito: Cogito v2.1 671B supports up to 128K tokens. Perplexity: Sonar Deep Research supports up to 128K tokens.
Do both Deep Cogito: Cogito v2.1 671B and Perplexity: Sonar Deep Research support tool calling?
Deep Cogito: Cogito v2.1 671B: not advertised. Perplexity: Sonar Deep Research: not advertised.