Model Introduction
Claude Fable 5.1: Coding, Research and API Pricing
SandBase explains Claude Fable 5.1 coding results, API IDs and cache pricing, with a worked cost example and a separate Astra comparison using actual request bills.
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Insights on AI agents, model routing, and building production-ready AI systems.
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Developer Tools
Fable 5.1 Long-Running Agents: Tests, Recovery and Cost
SandBase's Fable 5.1 evaluation design: test a billing-client upgrade across two repositories, recover from tool failures, cap retries, and count accepted-task cost.
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Model Comparison
Fable 5.1 vs Mythos 5.1: Pricing, Limits and Access
SandBase compares Fable 5.1 and Mythos 5.1 access, API pricing, fallback and retention. Learn why a Fable API account does not grant Mythos research permissions.
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Model Comparison
GPT-6 Astra vs Claude Fable 5.1 Tested: Same 3D Game Task, Different Results
SandBase's GPT-6 Astra vs Claude Fable 5.1 test: the same 3D game prompt, original code, startup failures, completion checks, response times and actual API charges.
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Model Comparison
GPT Image 2.5 Flare vs Sunburst: Differences, Pricing and Which to Choose
GPT Image 2.5 Flare vs Sunburst: compare speed, editing precision, quality settings and official pricing, with a headphone recoloring example showing what a local edit preserves.
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Developer Tools
How to Use ChatGPT Sites: Build, Publish, and Understand Pricing
Learn how to use ChatGPT Sites to build and publish a website, check plan limits and custom domains, and choose model or image APIs for your own workflow.
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Developer Tools
Claude Code Auto Mode: Check Permissions and Shared-Chat Privacy
Check Claude Code Auto Mode, switch back to Manual, rehearse approvals safely, and audit shared-chat URLs in files and Git history without rewriting history.
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Agent Daily News
Claude Fable 5.1 Released: Revisiting the EAP Rumors
Claude Fable 5.1 launched on September 1. Revisit the EAP names, Claude Web routing rumors, and evidence that could not establish a model's identity.
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Model Comparison
Gemini 3.8 Flash Coding Costs: When Cheap Retries Pay Off
Calculate Gemini 3.8 Flash coding costs including thinking tokens, compare provider rates, and cap retries at two before escalating a failed patch.
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