20+ Best Alternatives to Sieve in 2026

Looking for an alternative to Sieve? Below are 20 AI startups working in the same space — ranked by our Neuron score so the most credible options come first. Each card shows what makes the tool a viable substitute, pricing signals, and funding stage.

1. 1

   Runware

   💰 $66M

   One API for fast generative AI inference

   Why it's similar: Shares categories with Sieve — AI Video, AI Developer Tools.

   💵 Free

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2. 2

   Twelve Labs

   💰 $77M

   Video understanding AI for developers

   Why it's similar: Shares categories with Sieve — AI Video, AI Developer Tools.

   💵 Freemium

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3. 3

   fal

   💰 $220M

   Fastest generative-media inference for developers

   Why it's similar: Shares categories with Sieve — AI Video, AI Developer Tools.

   💵 Usage-based

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4. 4

   Cursor

   💰 $7.6B

   The AI code editor built for productive engineers.

   Why it's similar: Shares categories with Sieve — AI Developer Tools.

   💵 Free · From $20/mo

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5. 5

   OpenAI

   💰 $193.3B

   Creator of ChatGPT, GPT-4, and the leading frontier AI lab.

   Why it's similar: Shares categories with Sieve — AI Developer Tools.

   💵 Free · From $20/mo

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6. 6

   Thinking Machines Lab

   💰 $2B

   Frontier AI research lab building customizable, multimodal models

   Why it's similar: Shares categories with Sieve — AI Developer Tools.

   💵 Usage

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7. 7

   Hugging Face

   💰 $970M

   The AI community building the future of machine learning.

   Why it's similar: Shares categories with Sieve — AI Developer Tools.

   💵 Free · From $9/mo

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8. 8

   Runway

   💰 $1.4B

   Applied AI research for video, image, and 3D.

   Why it's similar: Shares categories with Sieve — AI Video.

   💵 Free · From $15/mo

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9. 9

   MiniMax

   💰 $2.2B

   Chinese AI lab behind Hailuo video and Talkie companions.

   Why it's similar: Shares categories with Sieve — AI Developer Tools.

   💵 Freemium

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10. 10

    Harvey

    💰 $1.7B

    The AI platform for elite law firms.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Paid

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11. 11

    xAI

    💰 $56B

    AI designed to understand the universe

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Paid

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12. 12

    Cognition

    💰 $2.5B

    Applied AI lab building Devin, the AI software engineer.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Free · From $500/mo

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13. 13

    Lovable

    💰 $542M

    The AI Fullstack Engineer that ships full-stack applications 20x faster than writing code

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Free · From $25/mo

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14. 14

    Synthesia

    💰 $802.4M

    AI video creation platform with realistic avatars.

    Why it's similar: Shares categories with Sieve — AI Video.

    💵 Paid · From $22/mo

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15. 15

    Rebellions

    💰 $850M

    Rebellions provides high-performance AI inference infrastructure, enabling efficient and scalable AI deployment for real-world applications.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Enterprise · Contact sales

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16. 16

    Anyscale

    💰 $260M

    Production-scale AI infrastructure powered by Ray for distributed training, data curation, and batch inference.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Free

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17. 17

    n8n

    💰 $254M

    Open-source, fair-code workflow automation platform with native AI agent building blocks.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Pricing not listed

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18. 18

    Zhipu AI

    💰 $2.0B

    Chinese foundation model lab behind ChatGLM and GLM-4.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Free

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19. 19

    Replit

    💰 $1.3B

    Build software collaboratively from any device.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Free · From $20/mo

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20. 20

    DataRobot

    💰 $1.1B

    The only unified agent workforce platform built for enterprise outcomes, not endless pilots.

    Why it's similar: Shares categories with Sieve — AI Developer Tools.

    💵 Enterprise · Contact sales

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