September was undoubtedly the most significant release month for artificial intelligence. Here's a list of all the models that rekeased in September: Claude Fable 5.1 Claude Mythos 5.1 Gemini 3.8 Flash Gemini 3.8 Flash Cyber Muse Spark 1.3 Qwen3.8-Max-0902 GPT-6 Astra GPT Image 2.5 Flare GPT Image 2.5 Sunburst GPT-Live-1 DeepSeek V4.1 Flash SWE-2 Grok 4.7 MiMo-V2.6-Pro MiMo-V2.6-Flash Claude Opus 5.5 GPT-6 Sol GPT-6 Luna Gemini 3.8 Flash TTS Gemini 3.8 Flash-Lite TTS Claude Sonnet 5.5 GPT-6.1 Sol Gemini 4 Argon MiniMax M3.1 Flash Preview Step 5 Preview Qwen3.8-Omni-Flash Ember-1 Grok Voice Transcribe 2.0 Ling 3.1 Flash Eleven v4 Eleven v4 Turbo Cohere Embed 5 Pro Cohere Embed 5 Fast Parakeet Redux Ternary Bonsai 2 27B