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Base44 Upgrades Superagent to GPT-5.6 Sol

Base44

Base44 replaced GPT-5.5 with GPT-5.6 Sol, OpenAI's new flagship model, as the GPT option in the Superagent model picker. Existing Superagents previously configured to use GPT-5.5 were automatically upgraded to Sol at no additional credit cost. GPT-5.6 Sol is OpenAI's top-tier model in its new Sol/Terra/Luna family, positioned for frontier reasoning, complex coding, and multi-step agentic tasks.

Key Takeaways

  • Base44 swapped GPT-5.5 for GPT-5.6 Sol as the default GPT option for Superagents.
  • The upgrade was automatic, migrating existing Superagents without any manual reconfiguration.
  • The switch came at no additional credit cost to users.
  • GPT-5.6 Sol is OpenAI's new flagship model, part of a three-tier family (Sol, Terra, Luna) built for frontier reasoning and agentic tasks.
  • Sol reportedly sets a new state of the art on coding-agent benchmarks while using fewer output tokens than prior leading models.
  • The update keeps Base44's Superagent feature aligned with the latest frontier models with minimal friction for existing users.

A Free Upgrade for Superagent Users

Base44 updated the model picker for Superagents, its in-app AI agent feature, replacing GPT-5.5 with GPT-5.6 Sol. Any Superagent previously configured to run on GPT-5.5 was automatically migrated to Sol, and Base44 did not increase the credit cost for the switch.

What GPT-5.6 Sol Brings

GPT-5.6 Sol is OpenAI's flagship model in its newly released three-tier family (Sol, Terra, and Luna), built for frontier reasoning, complex coding, and multi-step agentic workflows. Base44's own AI engineering team has pointed to independent benchmarking showing Sol setting a new state of the art on coding-agent evaluations, while using meaningfully fewer output tokens than prior top models. For Superagents, that translates into potentially faster, more capable responses on tasks that require multi-step reasoning, such as automations, data lookups, and conversational workflows.

Why It Matters

Because the migration was automatic and cost-neutral, existing Superagent configurations continue working without any action required from builders, while immediately benefiting from a more capable underlying model. This keeps Base44's agent offering aligned with the latest available frontier models without forcing users to manually reconfigure their agents.