OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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DeepSeek records 372,761,591 monthly visits with +4.3% month-over-month growth and Freemium pricing. Formation records 82,420 monthly visits with -16.6% growth and Paid pricing.

Adaptive interview prep and mentorship for experienced software engineers
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | deepseek.com | formation.dev |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 372.76M (372,761,591) | 82.42K (82,420) |
| MoM Traffic Delta | +15.36M (+4.3%) |
| -16.39K (-16.6%) |
| Primary Market & Share | 🇨🇳 China (50.5%) | 🇺🇸 United States (59.6%) |
|---|
| Direct Visits / mo | 291.59M | 63.81K |
|---|
| User Rating | 3.8 | 5 |
|---|
| Supported Platforms | Website | Website |
|---|
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Leverages a sparse Mixture-of-Experts architecture (49B active parameters out of 1.6T on V4-Pro) to process up to 1 million tokens with minimal latency and memory overhead.
Pioneered by DeepSeek-R1 and integrated into V3.2 and V4 thinking modes, exposing step-by-step self-verification for complex math, logic, and code debugging.
Drops input token costs to $0.003/1M on Flash and $0.022/1M on V4-Pro for cache hits, with 50% lower rates during off-peak UTC hours.
Provides free access at chat.deepseek.com and on iOS/Android with document uploads, reasoning mode, and web search without paywalling core models.

Adaptive interview prep and mentorship for experienced software engineers
Practice recalibrates each session, getting harder as you improve so hours go where your target rounds demand.
Get matched with mentors and hiring managers who run interviews at the companies you're targeting.
Prepare for data structures and algorithms, system design, AI-assisted coding, behavioral rounds, and more.
Solo, one-on-one, or small-group mocks plus career coaching and negotiation support.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
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