# AI model releases, October 2026

16 AI model releases we verified for October 2026 from 11 vendors, including GPT-6.1 Terra, Kimi K3.1 Pro, Kimi K3.1 Pro Highspeed, Nemotron 3.5 Bolt E4B (4GB) and more. Dates, status and a vendor source link for each.

Period: 2026-10-01 to 2026-10-31 · Last verified: 2026-10-26 · Canonical: https://theagenticweekly.com/models/releases/2026-10 · All models: https://theagenticweekly.com/models · JSON: https://theagenticweekly.com/models.json

This lists the releases in our dataset for the period, not every model a vendor shipped. Every row links to the vendor page that states the release date. We did not run any of these models (evidence: Reported).

| Date | Model | Vendor | Status | Release date source |
|---|---|---|---|---|
| 2026-10-26 | [GPT-6.1 Terra](https://theagenticweekly.com/models/gpt-6-1-terra) | OpenAI | generally available | https://developers.openai.com/api/docs/changelog |
| 2026-10-23 | [Kimi K3.1 Pro](https://theagenticweekly.com/models/kimi-k3-1-pro) | Moonshot AI | generally available | https://vercel.com/changelog/kimi-k3-1-pro-and-kimi-k3-1-pro-highspeed-are-available-now-in-ai-gateway |
| 2026-10-23 | [Kimi K3.1 Pro Highspeed](https://theagenticweekly.com/models/kimi-k3-1-pro-highspeed) | Moonshot AI | generally available | https://vercel.com/changelog/kimi-k3-1-pro-and-kimi-k3-1-pro-highspeed-are-available-now-in-ai-gateway |
| 2026-10-23 | [Nemotron 3.5 Bolt E4B (4GB)](https://theagenticweekly.com/models/nemotron-3-5-bolt-e4b) | NVIDIA | generally available | https://huggingface.co/nvidia/NVIDIA-Nemotron-3.5-Bolt-E4B-4GB |
| 2026-10-20 | [Voxtral 3](https://theagenticweekly.com/models/voxtral-3) | Mistral AI | public preview | https://docs.mistral.ai/models/voxtral-mini-tts-3-0.md |
| 2026-10-19 | [Mercury 3](https://theagenticweekly.com/models/mercury-3) | Inception | generally available | https://www.inceptionlabs.ai/blog/introducing-mercury-3 |
| 2026-10-19 | [MiniMax M3.1 Flash](https://theagenticweekly.com/models/minimax-m3-1-flash) | MiniMax | generally available | https://www.minimax.io/blog/minimax-m31f |
| 2026-10-17 | [DeepSeek-V4.1-Flash-1017](https://theagenticweekly.com/models/deepseek-v4-1-flash-1017) | DeepSeek | generally available | https://api-docs.deepseek.com/news/news261017/ |
| 2026-10-15 | [Muse Spark Open](https://theagenticweekly.com/models/muse-spark-open) | Meta | generally available | https://research.meta.ai/blog/muse-spark-open |
| 2026-10-14 | [Grok Voice 3.0](https://theagenticweekly.com/models/grok-voice-3-0) | xAI | generally available | https://docs.x.ai/developers/release-notes |
| 2026-10-13 | [Gemini 4 Argon](https://theagenticweekly.com/models/gemini-4-argon) | Google | generally available | https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-4-argon/ |
| 2026-10-12 | [Muse Wonder](https://theagenticweekly.com/models/muse-wonder) | Meta | public preview | https://about.fb.com/news/2026/10/introducing-muse-wonder-models/ |
| 2026-10-12 | [Muse Wonder Full](https://theagenticweekly.com/models/muse-wonder-full) | Meta | limited access | https://about.fb.com/news/2026/10/introducing-muse-wonder-models/ |
| 2026-10-07 | [Claude Haiku 5.5](https://theagenticweekly.com/models/claude-haiku-5-5) | Anthropic | generally available | https://www.anthropic.com/news |
| 2026-10-06 | [Mistral Large 4](https://theagenticweekly.com/models/mistral-large-4) | Mistral AI | public preview | https://mistral.ai/news/mistral-large-4/ |
| 2026-10-06 | [Nano Banana 2.1](https://theagenticweekly.com/models/nano-banana-2-1) | Google | generally available | https://ai.google.dev/gemini-api/docs/changelog |

- **GPT-6.1 Terra** (OpenAI, Oct 26, 2026): OpenAI's fast, lower-cost GPT-6.1 model for visual reasoning, computer use and writing; the successor to GPT-5.6 Terra, priced at half of GPT-6.1 Sol. Date note: OpenAI API changelog. The announcement page shows only the year.
- **Kimi K3.1 Pro** (Moonshot AI, Oct 23, 2026): Moonshot's post-trained successor to Kimi K3, a 3T-class model with a 1M-token context, live in Kimi apps and the API on Oct 23, 2026; open weights are promised by Nov 4. Date note: Vercel's AI Gateway changelog, dated Oct 23, 2026, lists K3.1 Pro as available that day; Artificial Analysis also dated its launch write-up Oct 23. Moonshot's blog carries no date; Reuters reported the launch on Oct 24 Beijing time.
- **Kimi K3.1 Pro Highspeed** (Moonshot AI, Oct 23, 2026): The faster serving tier of Kimi K3.1 Pro: Moonshot says it delivers 2 to 3 times the output speed for interactive coding and agents, at twice the per-token price, launched alongside K3.1 Pro on Oct 23, 2026. Date note: Vercel's AI Gateway changelog, dated Oct 23, 2026, lists both models as available that day. Moonshot's launch blog names Highspeed as released with K3.1 Pro but carries no date.
- **Nemotron 3.5 Bolt E4B (4GB)** (NVIDIA, Oct 23, 2026): NVIDIA's compact open-weights text model built on Gemma-4-E4B, quantized to roughly 4GB (Q4_K_M) for laptops and edge devices; released Oct 23, 2026. Date note: Date of the public Hugging Face release; NVIDIA's Oct 15 blog announced it ahead of time.
- **Voxtral 3** (Mistral AI, Oct 20, 2026): Mistral's third-generation speech family, in public preview since Oct 20, 2026: Mini Transcribe, Small Transcribe, Mini Transcribe Realtime and Mini TTS, plus a voice agent SDK. Date note: Mistral's model cards list Oct 20, 2026 for each Voxtral 3 model.
- **Mercury 3** (Inception, Oct 19, 2026): Inception's diffusion-based language model with a 1M-token context, launched Oct 19, 2026 and billed at launch for half its list price. Date note: Blog post dated Oct 19, 2026; early-access partners had it earlier.
- **MiniMax M3.1 Flash** (MiniMax, Oct 19, 2026): MiniMax's low-cost agentic and coding model, announced Oct 19, 2026 at $0.15 input and $0.60 output per 1M tokens, with a public Hugging Face repository under a custom community license.
- **DeepSeek-V4.1-Flash-1017** (DeepSeek, Oct 17, 2026): DeepSeek's Oct 17, 2026 update to V4.1 Flash: MIT-licensed open weights, now served behind the deepseek-flash API name, with shorter outputs and faster task completion than the Sep 10 version. Date note: DeepSeek's release post and changelog entry are dated 2026/10/17.
- **Muse Spark Open** (Meta, Oct 15, 2026): Meta's open-weights 816B-parameter mixture-of-experts model (42B active), released Oct 15, 2026 under the Muse Model License, which has limited commercial terms.
- **Grok Voice 3.0** (xAI, Oct 14, 2026): xAI's voice model, released Oct 14, 2026 at the same price as Grok Voice 2.0.
- **Gemini 4 Argon** (Google, Oct 13, 2026): Google's newest Gemini model: a multimodal frontier model that Google claims is #1 on the Vals Index, and that sits at #1 on the LMArena Text Arena snapshot we cite. Date note: General availability date: Google's Gemini API changelog and launch post are dated Oct 13, 2026. Google announced Argon on Sep 30, 2026 but limited it to trusted cyber defenders (Fairwind Program) until the Oct 13 rollout, so some trackers list Sep 30.
- **Muse Wonder** (Meta, Oct 12, 2026): Meta's most capable hosted model for long-running agent and coding work, launched Oct 12, 2026 in preview on the Meta Model API and in Muse Code.
- **Muse Wonder Full** (Meta, Oct 12, 2026): The higher-capability Muse Wonder variant, available since Oct 12, 2026 only inside Muse Code on the Power Usage and Maximum Usage subscription plans.
- **Claude Haiku 5.5** (Anthropic, Oct 7, 2026): Anthropic's fastest, smallest current Claude model, built for high-volume work like summarization, subagents and browser use.
- **Mistral Large 4** (Mistral AI, Oct 6, 2026): Mistral's 1.05T-parameter multimodal mixture-of-experts model, in public preview via API, with open weights promised by the end of October 2026. Date note: Public preview launch.
- **Nano Banana 2.1** (Google, Oct 6, 2026): Google's high-efficiency Gemini image generation model (API id gemini-nano-banana-2.1), generally available since Oct 6, 2026.

Data licence: CC BY 4.0. Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0.