Anthropic's current smallest and fastest Claude model, released October 2026 for high-volume, latency-sensitive work such as classification, extraction, routing and subagent tasks. The first Haiku with an effort control, plus a 1M-token context.
Mid-tier GPT-6 model released 2026-09-29 that OpenAI says nears GPT-6 Astra on coding, computer use and professional work at a fifth of Astra's token price; 1.05M context, low-to-max effort, optional Ultrafast mode.
Anthropic's current Sonnet model, released September 2026 as a faster, lower-cost complement to Claude Opus 5.5. Balances speed and intelligence with a 1M-token context, adaptive thinking and a between_tools setting that skips up-front thinking.
Anthropic's current Opus model and its recommended starting point for most workloads as of October 2026, first of the Claude 5.5 family. Built for long-running agentic coding and knowledge work, with always-on adaptive thinking and a 1M-token context.
Most efficient GPT-6 model (September 2026) for focused, high-volume work, priced at $0.10 input and $0.50 output per million tokens, with the full 1.05M context and effort from none to max. OpenAI's suggested replacement for retiring GPT-4o and GPT-4.1 snapshots.
First Sol model of the GPT-6 generation (September 2026), built for complex coding and agentic workflows with a 1.05M context and none-to-max reasoning. Followed a week later by GPT-6.1 Sol, which replaced it in OpenAI's main lineup.
xAI's flagship model as of October 2026, released September 21, 2026 for coding, agents and knowledge work. Offers a 500k-token context, no text output limit and reasoning effort up to xhigh.
OpenAI's flagship as of October 2026, released September 2026 as the top GPT-6 model for demanding reasoning, coding, computer use and research. 1.05M-token context, 128K output, reasoning effort from low to max.
Google's current Flash model, GA since September 2026, aimed at long-horizon software engineering and autonomous agents. Reads text, image, video, audio and PDF in a 1M-token context, with 64K output and low, medium or high thinking.
Anthropic's most capable generally available model as of October 2026, succeeding Claude Fable 5. A Mythos-class tier above Opus for demanding reasoning and long-horizon agentic work, with always-on adaptive thinking and a 1M-token context.
Flash model released in August 2026, three weeks after 3.6 Flash, with coding and web-development gains and a March 2026 knowledge cutoff. Deprecated in October 2026; requests now route to its successor, Gemini 3.8 Flash.
August 2026 successor to Grok 4.5, tuned for long-running agents and interactive work, with a 500k-token context. Grok 4.7 replaced it as xAI's top model in September 2026 at the same token prices.
Embodied-reasoning model for robots, built on Gemini 3.5 Flash and in public preview since July 2026, replacing Robotics-ER 1.6. Handles spatial reasoning, task-progress tracking from video, tool orchestration and multi-robot coordination over a 128K context.
Opus model from July 2026 that Anthropic said came close to Claude Fable 5 at half the price. Now legacy, succeeded by Claude Opus 5.5 in September 2026; 1M-token context, 128K output and adaptive thinking.
Google's current Flash-Lite model, GA since July 2026 and the fastest, cheapest member of the 3.5 series, aimed at high-volume extraction and sub-agent work. Takes text, image, video, audio and PDF input across a 1M-token context.
Flash model released in July 2026 as the successor to 3.5 Flash, which now routes to it, with Google citing fewer output tokens per task. Still stable, though Gemini 3.7 and 3.8 Flash have since followed.
xAI's July 2026 model for coding, agentic tasks and knowledge work, with a 500k-token context and reasoning effort up to xhigh. Superseded by Grok 4.6 and then Grok 4.7; the grok-build-latest alias still points here.
Low-cost tier of OpenAI's GPT-5.6 family (July 2026), roughly the old nano slot, with a 1.05M context and effort settings from none to max. Superseded by GPT-6 Luna in September 2026.
Top model of the GPT-5.6 family, generally available July 2026 and the target of the gpt-5.6 alias; 1.05M context and reasoning effort up to a new max level. Superseded by GPT-6 Astra and GPT-6.1 Sol in September 2026.
Middle tier of GPT-5.6 (July 2026), balancing cost and capability in the slot earlier GPT-5 releases filled with a mini model; 1.05M context, effort up to max. The GPT-6 generation has no Terra tier.
