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Field notes

The dates column tells this section's story better than any essay: the gap between frontier releases has collapsed from years to weeks. Open the 2026 records first and note who discloses what — secrecy itself became a spec.

Start with these three

C5 Claude 5 (Fable 5 / Opus 5 / Sonnet 5) The 2026 frontier line — four releases in under two months. DV DeepSeek-V4 1.6 trillion parameters, MIT-licensed. The efficiency school, scaled up. MM Meta Muse Spark The record that captures the end of the Llama era — and a strategy reversal.
Key columns: parameters are the model's learned weights (open models disclose them, closed ones usually don't); context is how much text the model can consider at once; open weights can be downloaded, closed models are API-only.
Reset
ModelTypeReleased ParametersContextWeights★
Meta Muse SparkMeta (Superintelligence Labs) Multimodal 2026-08 Not publicly disclosed 1M (Spark 1.2) Closed (Glimmer open; Spark 1.2 opening pledged)
Gemini 3.5–3.7 Flash (2026 line)Google DeepMind Multimodal 2026-08 Not publicly disclosed 1M Closed
Qwen 3.6 / 3.7-Max / 3.8 (2026 line)Alibaba Language 2026-08 up to 2.4T (95B active) 1M Open (Apache) + closed Max tier
Claude 5 (Fable 5 / Opus 5 / Sonnet 5)Anthropic Coding 2026-07 Not publicly disclosed 1M Closed
GPT-5.6 (and the 2026 GPT-5.x line)OpenAI Language 2026-07 Not publicly disclosed 400K Closed
DeepSeek-V4DeepSeek Language 2026-04 1.6T (49B active) 1M Open (MIT)
Gemini 3Google DeepMind Multimodal 2025-11 Not publicly disclosed 1M Closed
Claude 4.5 (Opus / Sonnet / Haiku)Anthropic Coding 2025-11 Not publicly disclosed 200K–1M Closed
Marble (World Labs)World Labs World Model 2025-11 Not publicly disclosed — Closed
GLM-4.6Zhipu AI (Z.ai) Coding 2025-10 355B (32B active) 200K Open
GPT-5OpenAI Language 2025-08 Not publicly disclosed 400K Closed
Genie 3Google DeepMind World Model 2025-08 Not publicly disclosed — Closed
gpt-ossOpenAI Language 2025-08 117B (5.1B active) / 21B 128K Open
Grok 4xAI Reasoning 2025-07 Not publicly disclosed 256K Closed
Kimi K2Moonshot AI Language 2025-07 1T (32B active) 256K Open
MiniMax-M1MiniMax Reasoning 2025-06 456B (46B active) 1M Open
Mistral Large & MagistralMistral AI Reasoning 2025-06 24B (open) / larger closed 128K Mixed
Claude 4 (Opus 4 / Sonnet 4)Anthropic Coding 2025-05 Not publicly disclosed 200K–1M Closed
Veo 3Google DeepMind Video 2025-05 Not publicly disclosed — Closed
Qwen3Alibaba Language 2025-04 0.6B–235B (22B active) 128K–1M Open
Llama 4Meta Multimodal 2025-04 109B–400B (17B active) up to 10M (claimed) Open
Midjourney v7Midjourney Image 2025-04 Not publicly disclosed — Closed
OpenAI o3OpenAI Reasoning 2025-04 Not publicly disclosed 200K Closed
Cohere Command ACohere Language 2025-03 111B 256K Open (research) / commercial license
Gemini 2.5Google DeepMind Reasoning 2025-03 Not publicly disclosed 1M Closed
Gemma 3Google DeepMind Language 2025-03 1B–27B 128K Open
NVIDIA Isaac GR00T N1NVIDIA Robotics 2025-03 2B — Open
NVIDIA NemotronNVIDIA Language 2025-03 4B–253B 128K Open
Runway Gen-4Runway Video 2025-03 Not publicly disclosed — Closed
Figure HelixFigure AI Robotics 2025-02 7B + 80M — Closed
Grok 3xAI Language 2025-02 Not publicly disclosed 1M Closed
Wan 2.xAlibaba Video 2025-02 1.3B–27B — Open
DeepSeek-R1DeepSeek Reasoning 2025-01 671B (37B active) 128K Open
NVIDIA CosmosNVIDIA World Model 2025-01 4B–14B — Open
DeepSeek-V3DeepSeek Language 2024-12 671B (37B active) 128K Open
Amazon NovaAmazon Multimodal 2024-12 Not publicly disclosed 300K Closed
Microsoft Phi-4Microsoft Language 2024-12 14B 16K Open
SoraOpenAI Video 2024-12 Not publicly disclosed — Closed
π0 (pi-zero)Physical Intelligence Robotics 2024-10 ~3B — Open
OpenAI o1OpenAI Reasoning 2024-09 Not publicly disclosed 128K Closed
FLUX.1Black Forest Labs Image 2024-08 12B — Open (dev/schnell) + closed pro
Llama 3.1 405BMeta Language 2024-07 405B dense 128K Open
Claude 3.5 SonnetAnthropic Coding 2024-06 Not publicly disclosed 200K Closed
ESM3EvolutionaryScale Science 2024-06 98B — Open (small) / API (large)
KlingKuaishou Video 2024-06 Not publicly disclosed — Closed
AlphaFold 3Google DeepMind Science 2024-05 — — Open (AF2) / server + code w/ restrictions (AF3)
GPT-4oOpenAI Multimodal 2024-05 Not publicly disclosed 128K Closed
AI21 JambaAI21 Labs Language 2024-03 52B–398B MoE hybrids 256K Open
Claude 3 (Opus / Sonnet / Haiku)Anthropic Language 2024-03 Not publicly disclosed 200K Closed
Gemini 1.5Google DeepMind Multimodal 2024-02 Not publicly disclosed 1M–2M Closed
OpenAI text-embedding-3OpenAI Embedding 2024-01 Not publicly disclosed — Closed
Mistral 7B & MixtralMistral AI Language 2023-09 7B / 47B (13B active) 32K Open
Llama 2Meta Language 2023-07 7B–70B 4K Open
GPT-4OpenAI Language 2023-03 Not publicly disclosed 8K–128K Closed
WhisperOpenAI Speech & Music 2022-09 39M–1.5B — Open
Stable DiffusionStability AI / CompVis / Runway Image 2022-08 0.9B–8B — Open
GPT-3OpenAI Historical 2020-06 175B 2K Closed
GPT-2OpenAI Historical 2019-02 1.5B 1K Open
AlphaGo / AlphaZeroGoogle DeepMind Historical 2016-03 — — Closed

"Not publicly disclosed" is shown on record pages where a developer has not published a figure — parameters for closed frontier models are usually undisclosed. Download: models.csv · JSON