Best Open Source AI Models

Open-weights models let you self-host, fine-tune, and avoid per-token pricing. We rank them by measured intelligence, then note license terms and the cheapest hosted price we track.

10 models ranked · updated continuously

How we rank: Ranked by benchmark intelligence among models that publish downloadable weights.

  1. 01

    DeepSeek V4.5DeepSeek

    Open-weights frontier model at a fraction of closed-model pricing.

    IQ
    1431
    Rating
    4.87 / 5
    Context
    256K tokens
    Price
    $0.42/M tokens
    License
    open-weights
  2. 02

    Llama 5 400BMeta

    Meta's largest open-weights release to date.

    IQ
    1412
    Rating
    4.70 / 5
    Context
    512K tokens
    Price
    $0.9/M tokens
    License
    open-weights
  3. 03

    DeepSeek V4DeepSeek

    Frontier MoE at open-source prices.

    IQ
    1410
    Rating
    4.85 / 5
    Context
    256K
    Price
    $0.3/M tokens
    License
    Open Weights
  4. 04

    Kimi K2.5Moonshot AI

    Agentic open-weights model built for long tool chains.

    IQ
    1379
    Rating
    4.62 / 5
    Context
    1M tokens
    Price
    $0.55/M tokens
    License
    open-weights
  5. 05

    DeepSeek V3.2DeepSeek

    Frontier-tier intelligence at open-source prices.

    IQ
    1376
    Rating
    4.75 / 5
    Context
    128K
    Price
    $0.27/M tokens
    License
    Open Weights
  6. 06

    Llama 4 405BMeta

    The open ecosystem's heavyweight champion.

    IQ
    1355
    Rating
    4.60 / 5
    Context
    128K
    Price
    not published
    License
    Open Weights
  7. 07

    Qwen 3 OmniAlibaba

    Open all-modality model.

    IQ
    1300
    Rating
    4.50 / 5
    Context
    512K
    Price
    not published
    License
    Open Weights
  8. 08

    Mistral Small 3.2Mistral AI

    Small, fast, Apache-2.

    IQ
    1240
    Rating
    4.40 / 5
    Context
    128K
    Price
    not published
    License
    Open Weights
  9. 09

    Llama 4 Scout MiniMeta

    Tiny Llama, big reach.

    IQ
    1230
    Rating
    4.40 / 5
    Context
    128K
    Price
    not published
    License
    Open Weights
  10. 10

    OLMo 3Allen Institute for AI

    Fully open from data to weights.

    IQ
    1210
    Rating
    4.30 / 5
    Context
    128K
    Price
    not published
    License
    Open Source

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