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Moonshot launches Kimi K3.1 Pro, detailing migration and parameter changes

By PulseAugur Editorial · [3 sources] ·

Moonshot has released Kimi K3.1 Pro, available via API and within Kimi Code. This new model inherits parameter constraints from K3, notably fixing the temperature to 1.0 and impacting sampling parameters. Users migrating from K2.x models on Moonshot's platform will need to adapt their code by the end of 2026, as the K2 series is scheduled for retirement. The migration guide details specific error codes and configuration adjustments required for the K3.1 Pro, including handling disabled thinking and effort settings. AI

IMPACT This release introduces a new model with specific parameter constraints, potentially impacting developers integrating with Moonshot's API and requiring migration for older K2.x model users.

RANK_REASON New model release from a frontier lab (Moonshot). [lever_c_demoted from frontier_release: ic=2 ai=1.0]

Read on Medium — AI coding tag →

AI-generated summary · Google Gemini · from 3 sources. How we write summaries →

Moonshot launches Kimi K3.1 Pro, detailing migration and parameter changes

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Significant
New model release from a frontier lab (Moonshot). [lever_c_demoted from frontier_release: ic=2 ai=1.0]
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3 independent sources
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model release, product
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COVERAGE [3]

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    Kimi K3.1 Pro Migration Guide: the 400s, the Quiet Failures, and a Claude Code / Codex Config

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