WED, 03 JUN 2026 · 18:33:39 UTC
Department · The Timeline91 curated events

A short history
of modern AI.

Browse by day, month, or year. Scrub through every month of activity in the sparkline below — or filter by category to follow a single thread.

Oct 2018Jun 2026

June

2026

2 events

  1. Jun 03

    2026

    model

    TestingCatalog: Ideogram 4.0 debuts as SOTA open image generation model

    Ideogram released version 4.0 of its open image generation model, which ranks eighth on LM Arena and supports 2K resolution and precise text rendering.

  2. Jun 03

    2026

    model

    TestingCatalog: Google releases Gemma 4 12B open-source multimodal model

    Google's new Gemma 4 12B model is available on Huggingface under Apache 2.0, offering encoder-free multimodal capabilities ideal for local consumer device deployment.

May

2026

4 events

  1. May 28

    2026

    model

    Min Choi: Claude Opus 4.8 drops with major coding and agent upgrades

    Anthropic released Claude Opus 4.8 featuring improved coding, enhanced agent capabilities, effort control, and dynamic workflows with hundreds of subagents, plus Mythos-class models coming soon.

  2. May 28

    2026

    model

    Claude: Anthropic launches Claude Opus 4.8 with sharper judgment

    Claude Opus 4.8 is now available, featuring improved judgment, greater self-assessment honesty, and extended independent operation at unchanged pricing.

  3. May 20

    2026

    model

    Demis Hassabis: More info on Gemini 3.5 Flash model released

    Demis Hassabis shares a link to Google's blog post with more information about the Gemini 3.5 Flash model.

  4. May 20

    2026

    model

    Demis Hassabis: Hassabis shares details on new Gemini 3.5 Flash model

    Demis Hassabis shares a link to Google's blog post with more information on the Gemini 3.5 Flash model.

May

2025

1 event

  1. May 22

    2025

    model

    Claude Opus 4 introduces extended thinking

    First mainstream model with developer-tunable 'thinking budget'. Establishes the pattern other labs subsequently follow.

January

2025

1 event

  1. Jan 20

    2025

    model

    DeepSeek V3 + R1 release — the Sputnik moment

    A Chinese lab releases an open-weights reasoning model at frontier quality, trained for roughly $5M. Triggers an immediate global reassessment of the cost frontier.

April

2024

1 event

  1. Apr 18

    2024

    model

    Meta releases Llama 3

    8B and 70B open-weights models. Llama 3 70B is the first open model to clearly approach closed-frontier quality on benchmarks.

March

2024

1 event

  1. Mar 04

    2024

    model

    Anthropic releases Claude 3 family — Opus tops the boards

    Opus becomes the first non-OpenAI model to clearly top frontier benchmarks. Mid-tier Sonnet and small Haiku launch alongside.

February

2024

1 event

  1. Feb 15

    2024

    model

    OpenAI shows Sora — minute-long generated video

    Quality leap so large that many doubted it was real. Public release follows months later.

December

2023

1 event

  1. Dec 08

    2023

    model

    Mistral releases Mixtral 8x7B (MoE) with open weights

    First widely-used open-weights MoE model. Sets the template for the next two years of European open-weights frontier work.

March

2023

2 events

  1. Mar 14

    2023

    model

    Anthropic introduces Claude

    Same day as GPT-4. Anthropic positions Claude on safety-by-design via Constitutional AI — the first serious alternative to OpenAI as a frontier lab.

  2. Mar 14

    2023

    model

    OpenAI releases GPT-4

    First multimodal frontier model. Doubles down on alignment work via RLHF and constitutional methods. Capability jumps over GPT-3.5 are massive.

August

2022

1 event

  1. Aug 22

    2022

    model

    Stable Diffusion v1 released with open weights

    The image-generation revolution becomes open-source overnight. Spawns a thousand forks and the modern AI image ecosystem.

May

2020

1 event

  1. May 28

    2020

    model

    GPT-3 paper and API launch

    175B parameters. Few-shot prompting becomes a thing. The first model to feel categorically different.

February

2019

1 event

  1. Feb 14

    2019

    model

    OpenAI releases GPT-2 (cautiously)

    OpenAI initially withholds the full 1.5B model citing misuse concerns — the first 'too dangerous to release' moment.

October

2018

1 event

  1. Oct 11

    2018

    model

    Google releases BERT

    First widely-adopted Transformer encoder. Sweeps NLP benchmarks; becomes the default building block for the next two years.