EidoStack / Field notes
Explore EidoStack AI Playground updates, practical guides for working with AI models, prompt experimentation, response comparison, and token and API cost insights.
From the workspace
Practical insights on working with AI models, experimenting with prompts, and comparing responses.
October 26, 2026
Explore EidoStack’s None and System Prompt Only context strategies, plus individual chat message deletion, to control exactly what an AI model receives with each request.
October 15, 2026
Gemini 4 Argon is now available in EidoStack. Explore Google's flagship AI model, experiment with prompts, and track token usage and API costs in the Playground.
October 13, 2026
Claude Haiku 5.5 is now available in EidoStack. Explore Anthropic's new model, experiment with prompts, and track token usage and API costs in the Playground.
September 28, 2026
GPT-6 Sol and GPT-6 Luna are now available in EidoStack. Test both models with your own prompts, compare their responses, and analyze token usage and API costs.
September 26, 2026
Claude Opus 5.5 is now available in EidoStack. Test the latest Anthropic model, compare it with other AI models, and analyze its token usage and cost.
September 14, 2026
GPT-6 Astra is now available in EidoStack. Evaluate OpenAI’s frontier model on real workloads and compare its quality, context behavior, token usage, latency, and cost with alternative models.
September 13, 2026
Explore Google Gemini 3.8 Flash in the EidoStack AI Playground. Chat with the model, try your prompts, compare responses, and inspect token usage and estimated costs.
September 10, 2026
Claude Fable 5.1 is now available in EidoStack. Test it with your own prompts, compare its responses with other models, and evaluate token usage and cost to see whether it’s the right fit for your application.
August 17, 2026
Meet EidoStack, a Multi-Model AI Playground for Developers. Chat with supported AI models, experiment with prompts and context, compare responses, and track token usage and estimated costs with your own API keys.