Four AI Giants Released New Models in the Same Week - Here's How They Stack Up
Memeburn, Wednesday, September 9th, 2026
Memeburn compares Gemini 3.8 Flash, Claude Fable 5.1, GPT-6 Astra and Muse Spark 1.3 on benchmarks, pricing, speed and safety.
Google, Anthropic, OpenAI and Meta released Gemini 3.8 Flash, Claude Fable 5.1, GPT-6 Astra and Muse Spark 1.3 within days of each other.
Claude Fable 5.1 and GPT-6 Astra lead Terminal-Bench coding, Muse Spark tops DeepSWE, and GPT-6 Astra dominates math and reasoning benchmarks.
Gemini 3.8 Flash ($0.75/$3.75 per million tokens) and Muse Spark ($1.25/$4.25) undercut Claude and GPT-6 at $10/$50, though Flash has a 13.3-second time to first token.
The article concludes there is no single winner and most teams should match models to specific jobs.