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    Cognition introduces Fusion in Devin CLI

    Cognition says Fusion lets users choose their preferred model for planning and a cost-effective model for execution.

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    3 Sources, 19d ago, first seen 19d ago

    TLDR

    Cognition announced Fusion in Devin CLI for Fable and Astra, claiming it is 39% cheaper across coding benchmarks. The company says users can choose separate models for planning and execution, using a preferred model for the former and a cost-effective one for the latter.

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    3 Sources, first seen 19d ago

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    Combined views

    1.3M

    3 Sources, first seen 19d ago

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    183 comments
    813 saves
    190 reposts

    Sentiment

    Positive——Negative

    Summary

    Not enough discussion yet.

    No sentiment analysis available yet.

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    3 Sources

    @cognitionIntroducing Fusion in Devin CLI The most efficient frontier harness for Fable & Astra; 39% cheaper across coding benchmarks. Pick your favorite model for planning and a cost-effective model for execution.
    @walden_yanA big improvement for CLI fans who want to use more Astra or Fable. We've tuned Fusion so that the delegation is unnoticeable day-to-day. Worth giving it a try. Hats off to the team that made this possible @joon_h_lee @spdling @mapeiyuan @morgantepell @maaslalani
    @ArtificialAnlysWe independently benchmarked Devin Fusion for its release today - this is the first time a multi-model coding agent has been included on the Artificial Analysis Coding Agent Index, and it effectively retains Claude Fable 5.1 and GPT-6 Astra performance while reducing costs Devin Fusion runs a frontier lead model with a cost-efficient sidekick. We tested configurations from Cognition combining frontier models from Anthropic and OpenAI with their new SWE-2 (medium) as a sidekick model. Configured with Claude Fable 5.1 (xhigh) + SWE-2 (medium), Devin Fusion scores 62 on the Coding Agent Index v1.5, while with GPT-6 Astra (xhigh) + SWE-2 (medium) it scores 59. The Fable configuration has the higher score, while the Astra configuration is 43% less expensive and completes tasks 31% faster. Congratulations to @cognition on the release! See below for our results and analysis 🧵

    3 Sources

    @cognitionIntroducing Fusion in Devin CLI The most efficient frontier harness for Fable & Astra; 39% cheaper across coding benchmarks. Pick your favorite model for planning and a cost-effective model for execution.
    @walden_yanA big improvement for CLI fans who want to use more Astra or Fable. We've tuned Fusion so that the delegation is unnoticeable day-to-day. Worth giving it a try. Hats off to the team that made this possible @joon_h_lee @spdling @mapeiyuan @morgantepell @maaslalani
    @ArtificialAnlysWe independently benchmarked Devin Fusion for its release today - this is the first time a multi-model coding agent has been included on the Artificial Analysis Coding Agent Index, and it effectively retains Claude Fable 5.1 and GPT-6 Astra performance while reducing costs Devin Fusion runs a frontier lead model with a cost-efficient sidekick. We tested configurations from Cognition combining frontier models from Anthropic and OpenAI with their new SWE-2 (medium) as a sidekick model. Configured with Claude Fable 5.1 (xhigh) + SWE-2 (medium), Devin Fusion scores 62 on the Coding Agent Index v1.5, while with GPT-6 Astra (xhigh) + SWE-2 (medium) it scores 59. The Fable configuration has the higher score, while the Astra configuration is 43% less expensive and completes tasks 31% faster. Congratulations to @cognition on the release! See below for our results and analysis 🧵