DeepSeek vs Reflection Beam comparison

DeepSeek and Reflection Beam compared side by side in AI.

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DeepSeek

A high-performance Chinese AI chatbot that is free to use. The models are also released as open source

What is good

  • Chatbot fully free
  • Good at math and reasoning
  • API is very cheap

What could be better

  • Controversy over overseas transfer of personal data
  • Slows down when traffic is heavy

DeepSeek official site

Reflection Beam

A 501B open-weight model that US-based Reflection AI released in October 2026. It drew attention as a US-made alternative to Chinese open models, with low inference compute as its strength

What is good

  • A large US-made open-weight model (Apache 2.0)
  • Strong coding benchmarks (SWE-bench Verified 80.9, official announcement)
  • GLM-5.2-class reasoning with 3 to 4 times less compute (official announcement)

What could be better

  • API price and free limits not disclosed
  • Text only (no image support, etc.)

Reflection Beam official site

At a glance

Highlighted rows are where they differ.

ItemDeepSeekVisit siteReflection BeamVisit site
Starting priceFreeNot applicableFreeNot applicable
Free tierFreeFree
Korean supportGoodLimited
Main models
  • DeepSeek-V4.1-Flash-1017 (multimodal)
  • DeepSeek-V4-Pro
Beam (501B total, 23B active MoE, text only)
TypeAI servicesAI services
CategoryChatbot/Assistant, Open ModelsOpen Models
CompanyDeepSeek, ChinaReflection AI, United States
Plans
  • Web and app fully free
  • API pay-as-you-go (50% off off-peak)
  • Weights released free (Apache 2.0, 2026-10-16, Hugging Face BF16
  • FP8
  • NVFP4)
  • Reflection API public beta (starts free, limits not disclosed)
  • Also offered on partner platforms
  • API price not disclosed
Pros
  • Chatbot fully free
  • Good at math and reasoning
  • API is very cheap
  • A large US-made open-weight model (Apache 2.0)
  • Strong coding benchmarks (SWE-bench Verified 80.9, official announcement)
  • GLM-5.2-class reasoning with 3 to 4 times less compute (official announcement)
  • Fine-tuning and evaluation tools to be released as well
Cons
  • Controversy over overseas transfer of personal data
  • Slows down when traffic is heavy
  • Censorship of sensitive topics
  • API price and free limits not disclosed
  • Text only (no image support, etc.)
  • No chat app for general users
  • Lower than Kimi K3 and DeepSeek V4.1 Flash on some benchmarks
  • No public Korean performance data

Prices and benefits may change. Check the official site before you pay.

Prices converted at 1 USD = ₩1,325.57 (2026-10-21). Original price shown in brackets. Taxes as listed by each provider.

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