Release dates and context windows of representative models from major providers.
  • Provider:
  • Model:
Provider Model Released Context window Description
Zhipu GLM GLM-4.5 2025-07-28 128K A native-agent hybrid-reasoning flagship, 355B / 32B active, MIT-licensed. Coding and tool use are the core selling points.
Qwen Qwen3-Coder 2025-07-22 256K A repo-scale agent coding specialist. Long context and tool calling are optimized for software engineering.
Kimi Kimi K2 2025-07-11 128K An open-source MoE flagship of about 1T parameters, with about 32B active. Focused on agents, tools, and coding, and seen as a major open-source milestone.
xAI Grok-4 2025-07-09 256K A multimodal flagship with native tool use and realtime search. The API offers 256K context, and Grok-4 Heavy launched with it.
xAI Grok-4 Heavy 2025-07-09 256K The highest-compute Grok-4 tier for SuperGrok Heavy. It spends more compute for higher reasoning quality.
Gemini Gemini 2.5 Flash 2025-06-17 1M The official 2.5 high-speed tier. Thinking budget is adjustable, for a flexible tradeoff between cost and intelligence.
DeepSeek DeepSeek-R1-0528 2025-05-28 128K A mid-cycle R1 update with stronger reasoning and fewer hallucinations. It also added JSON output and function calling.
Anthropic Claude Opus 4 2025-05-22 200K The Claude 4 flagship, focused on long-horizon agents and coding, with extended thinking. It was positioned as the strongest coding model at the time.
Anthropic Claude Sonnet 4 2025-05-22 200K The Claude 4 balanced tier. A broad upgrade over 3.7 in coding, instruction following, and thinking stability, also available to free users.
Qwen Qwen3 2025-04-29 131072 A hybrid thinking / non-thinking generation, including MoE sizes such as 235B-A22B, fully Apache-2.0 open source.
OpenAI o3 2025-04-16 200K The full o-series reasoning flagship. It can agentically use all tools in ChatGPT and reached the then-highest level on math, science, and complex tasks.
OpenAI o4-mini 2025-04-16 200K A cost-efficient reasoning model released with o3. Full tool-calling support, for cases that need reasoning without o3's cost.
OpenAI GPT-4.1 2025-04-14 1M The API flagship non-reasoning model, strong at coding. It officially brought context to 1 million tokens, with mini and nano released at the same time.
OpenAI GPT-4.1 mini 2025-04-14 1M A mid-small GPT-4.1 size that keeps million-token context and strong coding ability. A good fit for cost-efficient production use.
OpenAI GPT-4.1 nano 2025-04-14 1M The smallest GPT-4.1 size, with the lowest latency and price. Suited to classification, extraction, simple completion, and other high-traffic work.
Gemini Gemini 2.5 Pro 2025-03-25 1M A 2.5 flagship preview with a thinking process. It led then-current Gemini on math, code, and long-context retrieval.
DeepSeek DeepSeek-V3-0324 2025-03-24 128K A major hosted V3 update. Reasoning, coding, writing, search, and function calling all improved, MIT-licensed.
Qwen QwQ-32B 2025-03-06 131072 A Qwen open-source reasoning model. A 32B dense model that approached larger models on math and code reasoning.
OpenAI GPT-4.5 2025-02-27 128K A research-preview extra-large non-reasoning chat model that emphasized world knowledge and writing quality. Its lifespan was short, and it was later absorbed into the GPT-4.1 / GPT-5 line.
Anthropic Claude 3.7 Sonnet 2025-02-24 200K The first hybrid-reasoning Sonnet. It can switch between instant answers and extended thinking, and Claude Code launched with it.

Description

Release dates and context windows are compiled from public sources. Limits can differ by platform, plan, or preview API. Please refer to each provider's official documentation.
The table above is sorted by release date in descending order.