9 NovFable scores 65 on the Intelligence Index, beating Claude Opus by 6 points. Gemini 4 Carbon has already lost its lead before even becoming publicly available. And GPT will have to try really hard to get anywhere close to that score.ClaudeFable 5AnthropicGoogleOpenAIClaudeGeminiGPT
28 Sep🚨 Sonnet 5.5 Max beats GPT-6 Astra Max on the Intelligence Index vs. cost curve A few other things stand out: 1. At medium, GPT-6 Sol is much cheaper than Sonnet 5.5 at a fairly similar intelligence level. 2. Around the Pareto line, GPT-6 Sol Max and Sonnet 5.5 High are…AnthropicOpenAIClaudeGPT
28 Sep🚨 Sonnet 5.5 ranks #2 on the Artificial Analysis Intelligence Index, ahead of Fable 5.1. It also beats GPT-6 Sol by 8 points.Fable 5AnthropicClaude
28 SepSonnet 5.5 Max even beats Opus 5.5 Max on Terminal-Bench, while staying close to Opus across the rest. And against GPT Sol, the price/performance gap looks pretty brutal.AnthropicOpenAIClaudeGPT
28 Sep🚨 Sonnet 5.5 benchmarks are out It crushes Sonnet 5, goes toe-to-toe with Opus 5.5, and beats GPT-6 Sol across most shared benchmarks.AnthropicClaude
20 SepFinished my ClaudeCut experiment. I wanted to see how much of a $20 Claude subscription actually goes into the work, and how much gets eaten by Claude Code itself. I cut it down to one terminal tool, a 36-token system prompt, and a capped context window. Startup dropped from…ClaudeAnthropicClaude CodeContext managementAgent harnesses
7 Sep🚨 GPT-6 Astra is officially #1 on the updated Artificial Analysis Intelligence Index, sharing the top spot with Claude Fable 5.1.ClaudeFable 5AnthropicOpenAIClaudeGPT
7 SepGPT 6 Astra set a new record in MazeBench, a 3D puzzle benchmark It explored 40% of all rooms and collected 14% of gems Fable 5.1 reached just 4.3% of rooms and collected 2% of gemsFable 5AnthropicOpenAIClaudeGPT
5 SepGPT 6 Astra and Fable 5.1 got 20 attempts to pick up a block and place it into a bowl Astra: 95% success, 2.5 min, $0.94 per run Fable 5.1: 40% success, 6.8 min, $2.12 per run Astra also used 6× fewer output tokens, just 2.1k per run.Fable 5AnthropicOpenAIClaudeGPT
5 SepClaude is no longer the best model for frontend GPT-6 Astra just took the #1 spot, knocking Claude Fable 5.1 off the top The jump is massive: the previous GPT generation, GPT-5.6 Sol, was #13 A GPT model hasn’t led frontend since August 2025ClaudeFable 5GPT-5.6 SolAnthropicOpenAIClaudeGPT
5 SepGPT 6 Astra and Fable 5.1 got 20 attempts to pick up a block and place it into a bowl Astra: 95% success, 2.5 min, $0.94 per run Fable 5.1: 40% success, 6.8 min, $2.12 per run Astra also used 6× fewer output tokens, just 2.1k per run.Fable 5AnthropicOpenAIClaudeGPT
3 SepClaude Code is having issues again. Last month: Claude Code: 3 major outages + 6 degraded incidents Codex: 1 degradedClaudeAnthropicOpenAIClaude CodeCodex
23 AugTheo made his AI models tier list, so I made mineAnthropicDeepSeekGoogleMetaMoonshot AIOpenAIxAIZ.aiClaudeDeepSeekGeminiGLMGPTGrokKimiMuse
13 AugOpus 5 could cost you 5 extra hours every month Anthropic says the average Claude Code user spends around 20 hours a week with it. Opus 5 writes about 60% more than Fable 5. That can add up to roughly 5.5 extra hours of reading every month.ClaudeFable 5AnthropicClaude
12 Aug🚨 Hidden reasoning from GPT, Claude and Gemini can now be extracted Encrypted reasoning works across models from the same company. A block from a stronger model can be passed to a weaker one, which can still read it but is easier to get to reveal what is inside. Researchers…ClaudeAnthropicGoogleOpenAIClaudeGeminiGPTAI security
29 JulJetBrains MythBusters tested the Ponytail skill for Claude Code Before that, they analyzed Caveman. Its promised 65% token savings turned into 8.5%, with no cost reduction. Then came RTK, claiming up to 90% savings. In practice, some tasks became more expensive. The new review…ClaudeAnthropicJetBrainsClaude CodeAgent harnesses
28 Jul⚡️ Claude Opus 5 has taken the #1 spot in the Frontend Arena The previous leader was Kimi K3.ClaudeKimi K3AnthropicClaude
25 JulAnthropic said it cut 80% of the system prompt for Opus 5 I checked the claim: Opus 4.8: 130K characters Opus 5: 135K characters So the prompt actually got longer. Maybe they meant some specific section inside the system prompt. Or maybe not.AnthropicClaude
20 JulFable disproved an 87-year-old conjecture Mathematicians Levent Alpöge and Akhil Mathew asked the model to find a counterexample to the Jacobian Conjecture from 1939. Claude Fable 5 came back with a short formula. And it actually works. In plain English, the conjecture said…ClaudeFable 5AnthropicClaudeAI and mathematics
6 JulClaude got a lobotomy and did not fall apart Anthropic disabled the model’s J-space - the internal zone where Claude holds concepts and intermediate steps. • Basic autopilot stayed intact - the model kept writing coherently, recalling simple facts, and working with text. •…ClaudeAnthropicClaude
2 JulFable 5 got jailbroken again Researcher Vitto Rivabella tested Fable 5’s defenses and managed to find a bypass. According to him, most attempts failed. The protection is multi-layered: the model checks the prompt, conversation history, system context, and its own response. Some…Fable 5AnthropicClaude
2 JulFable was swapped out Claude Fable 5 was tested again in BridgeBench after its return. The results dropped sharply. Debugging: 86.2 → 25.9 Refactoring: 73.6 → 38.4 Hallucination: 75.9 → 61.7 When tasks pass the safety filters, the model performs like the June 12 version. The…ClaudeFable 5AnthropicClaude
1 JulAI completes 16% of the freelance tasks in Remote Labor Index CAIS updated the Remote Labor Index — a benchmark where AI agents complete real client projects: design, video, CAD, architecture, analytics, and web apps. The work is reviewed by humans and compared against a…ClaudeFable 5AnthropicClaude
26 JunGPT 5.6 Sol vs Mythos: no clear winner Based on the numbers, there is no blowout in either direction. GPT 5.6 Sol looks stronger on terminal-based tasks and slightly beats Claude Mythos in CyberGym. But in cyber exploitation and medicine, the advantage remains with Mythos /…ClaudeFable 5GPT-5.6 SolAnthropicOpenAIClaudeGPT
