Frontier Large Language Models at a Glance (August 2026)
Current flagship models from OpenAI, Anthropic, Google, Meta, xAI, DeepSeek and Mistral compared on release date, context window, open weights, modalities, knowledge cutoff and license — every figure sourced to the provider's own official pages.
| Provider | Model | Released | Context window | Open weights | Modalities (input) | Knowledge cutoff | License |
|---|---|---|---|---|---|---|---|
| OpenAI | GPT-5.6 Sol | 2026-07 | 922K in / 1.05M total | No (API) | Text, image | 2026-02 | Proprietary / API |
| Anthropic | Claude Fable 5 | 2026-06 | 1M | No (API) | Text, image | 2026-01 | Proprietary / API |
| Gemini 3.1 Pro (Preview) | 2026-02 | 1M | No (API) | Text, image, audio, video | 2025-01 | Proprietary / API | |
| Meta | Llama 4 Maverick | 2025-04 | 1M | Yes | Text, image | 2024-08 | Llama 4 Community License |
| xAI | Grok 4.6 | 2026-08 | 500K | No (API) | Text, image | 2026-02 | Proprietary / API |
| DeepSeek | DeepSeek-V4-Pro | 2026-08 | 1M | Yes | Text only | Undisclosed | MIT |
| Mistral | Mistral Large 3 | 2025-12 | 256K | Yes | Text, image | Undisclosed | Apache 2.0 |
Method & sources
Every spec comes from the provider's own official source (model card, docs, launch blog), retrieved 2026-08-16; anything not officially published is marked "未揭露 / undisclosed" rather than guessed or carried over from an older version. These are each provider's **current flagship**: Google's Gemini 3.1 Pro was still Preview (not GA) at the retrieval date, marked in the model name (the only GA Pro is the older 2.5 Pro). Context window is a single total-window figure for most; OpenAI is the only one that separately breaks out max input (922K) vs. total window (1.05M), both shown. Open-weight = weights downloadable. Sources: OpenAI https://developers.openai.com/api/docs/models/gpt-5.6 ; Anthropic https://platform.claude.com/docs/en/about-claude/models/overview ; Google https://deepmind.google/models/model-cards/gemini-3-1-pro/ ; Meta https://www.llama.com/ ; xAI https://docs.x.ai/developers/grok-4-6 ; DeepSeek https://api-docs.deepseek.com/news/news260813/ ; Mistral https://docs.mistral.ai/models/model-cards/mistral-large-3-25-12 . Models iterate quickly; refer to each official page for the latest.
Source: https://platform.claude.com/docs/en/about-claude/models/overview
Retrieved: 2026-08-16