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Cognition Integrates GPT-5.5 to Power Longer Autonomous Engineering Sessions in Devin

Agentic Coding
GPT
AI Agent

Cognition Integrates GPT-5.5 to Power Longer Autonomous Engineering Sessions in Devin
Cognition, an applied AI lab building end-to-end software agents, integrated GPT-5.5 into Devin as an Agent Preview. This update follows the launch of the new model by OpenAI and allows the software engineer to leverage the model's improved reasoning for long-running tasks.

The integration shifts the baseline for autonomous coding by extending the agent's operational loop. While previous models might lose coherence over time, this update enables Devin to investigate and fix production issues end-to-end. It specifically targets hidden bugs that were previously undetectable by other frontier models.

You can access the new model by selecting the GPT-5.5 Agent Preview within the Devin interface. This capability builds on recent enterprise deployments for vehicle software testing and is available to users through the standard platform login.

Read the full update →

Frequently asked questions

What is the GPT-5.5 Agent Preview in Devin?
The GPT-5.5 Agent Preview is a new integration within the Devin platform that allows the autonomous AI software engineer to use OpenAI's latest model. This specific version is optimized for agentic workflows, meaning it can handle complex, multi-step engineering tasks with higher levels of independence and reasoning than previous model versions.
How does GPT-5.5 improve Devin's performance?
According to Cognition, GPT-5.5 allows Devin to operate for longer durations and with greater autonomy. The model is specifically noted for its ability to identify hidden bugs that other frontier models typically miss and its capacity to investigate and resolve production-level software issues from start to finish without constant human intervention.
Who can access GPT-5.5 in Devin?
The GPT-5.5 integration is currently available to users of the Devin platform as an Agent Preview. Users can try the new model by logging into their accounts at the official Devin website. This preview phase allows developers to test the model's advanced autonomous capabilities within their existing software engineering workflows.