2025

April

o3 and o4-mini Models

April 17th, 2025

OpenAI’s new reasoning models, o3 and o4-mini, are now available on Humanloop. These models excel at complex reasoning tasks including coding, mathematics, and scientific analysis:

  • o3: OpenAI’s most powerful reasoning model, delivering exceptional performance across coding, math, science, and vision tasks
  • o4-mini: A faster, cost-efficient alternative that maintains strong capabilities while being more accessible
  • Enhanced Vision: Both models feature advanced image understanding capabilities
  • Cost-Effective: Competitive pricing with cached input support for optimized costs

Read more here.

GPT-4.1 Model Family

April 14th, 2025

OpenAI’s GPT-4.1 model family is now available on Humanloop, including GPT-4.1, GPT-4.1 Mini, and GPT-4.1 Nano variants.

Screenshot showing GPT-4.1 models

GPT-4.1 models in Humanloop

The new GPT-4.1 family brings significant improvements across all variants:

  • Massive Context Window: All models support up to 1 million tokens
  • Enhanced Reliability: Better at following instructions and reduced hallucinations
  • Improved Efficiency: 26% more cost-effective than previous versions
  • Specialized Variants: From the full GPT-4.1 to the lightweight Nano version for different use cases

Learn more about the capabilities of these new models on Open AI’s website.

Simplified Versioning System: From “Commit” to “Save”

April 11th, 2025

We’ve redesigned our versioning system to make it more intuitive and easier to use.

  • Save vs. Commit: Files are now simply saved to create new versions, replacing the previous commit-based workflow
  • Optional Version Names: Versions can now be identified with an optional name
  • Unified Version List: All versions now appear in a single list, eliminating the “uncommitted” status

Note: All existing commit messages have been preserved as version descriptions in the new system. Previously committed versions have been automatically named v1, v2, etc., to help you identify them in the new unified list.

Screenshot showing version names in the UI

Easily identify versions at a glance with clear names

Version Details Popover

Hover over any version label to access the new version details popover where you can:

  • Edit version name and description
  • View key parameters at a glance
  • Check the creation date of the version

Screenshot showing the version details popover

Edit version details with the new popover

This streamlined approach simplifies version management during evaluations and comparisons.

Gemini 2.5 Pro preview model

April 4th, 2025

Google’s Gemini 2.5 Pro preview is now available on Humanloop.

Screenshot showing Gemini 2.5 Pro preview

Gemini 2.5 Pro preview

Gemini 2.5 Pro Preview delivers state-of-the-art performance in mathematics, science, and code generation tasks, powered by its massive 1 million token context window. Learn more on the Google DeepMind website.