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Cobalt
Reasoning assistant for long documents and careful coding
API
Cobalt is a reasoning-focused AI assistant tuned for long documents and careful, multi-step coding tasks. It keeps context across large files so its answers stay grounded.
Ideal for engineers and analysts working through dense material or complex problems.
Connects via API or chat, supports large context windows, and returns structured, reviewable output. Free to try, with usage-based pricing for scale.
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Last reviewed: March 2026
