The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.
The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.
Access to all other Claude models is not affected.
We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.
Read our full statement: https://t.co/bwn0sximKZ
New Fable 5 beats Opus 4.8 on real world physics simulations
We gave both models the same three prompts and asked them to build self contained HTML5 sims with real physics and no libraries:
1. Chaotic double pendulum
2. Galton board
3. Water in a spinning drum (WCSPH)
Generation cost
Fable 5: $3.35 on 68.7k tokens, time 14m 47s
Opus 4.8: $0.93 on 38.9k tokens, time 8m 10s
Fable clearly did better on the water simulation, producing a much more solid and continuous body of water. Opus left larger gaps near the walls, scattered particles around the scene, and struggled to keep the fluid stable.
Qwen 3.7-max beats Opus 4.7 and GPT-5.5
We tested three frontier models on a real agentic task: write a Tetris bot that plays the game and trains itself. Each model could read its own code, run benchmarks, and rewrite itself across 10 iterations. Then we compared the final bots head to head.
Qwen 3.7-Max: training cost $1.32, bot improvement +56%
Claude Opus 4.7: training cost $12.15, bot improvement +28%
GPT-5.5: training cost $2.85, bot improvement +7%
Qwen won on every dimension - biggest jump, 9× cheaper than Claude, 2× cheaper than GPT. Long agentic loops is where Qwen Max actually delivers.
Descend into the dark with Season 2 Nightfall, now live:
🏭 New Map: Hagental Base
🌑 New Limited-Time Mode: Nightfall
🧪 New Sector: Defense Testing Complex 3
🏍️ New Vehicles: M1030-M1 & TM/O 450 Dirt Bikes
🔫 New Weapons: CZ3A1 SMG & vz. 61 Sidearm
🔗 https://t.co/fMzBOZ2NbS