Releases from frontier labs, major companies and research institutes — grouped by model, deduplicated across HuggingFace, OpenRouter and official blogs.
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Anthropic🇺🇸Frontier
Anthropic's Claude Fable 5.2 is reported to rank first on Artificial Analysis and is available through the API at 8 dollars per million input tokens and 40 dollars per million output tokens. Its highest reasoning level, max, failed to return an image in the author's SVG test.
Anthropic🇺🇸Frontier
Fast, low-cost model with reasoning effort levels from low to max that cannot be turned off. It costs the same as GPT-6 Luna up to 100,000 tokens, and the price rises above that.
Anthropic🇺🇸Frontier
The source is a release note for the llm-anthropic 0.30 plugin that lists Claude Sonnet 5.5 as supported. The sources say nothing about the model's capabilities or intended uses.
Anthropic🇺🇸Frontier
Anthropic's Opus 5.5 costs $4 input and $20 output per million tokens, 20 percent below Opus 5.0, with cache reads 60 percent cheaper. Anthropic says it communicates more clearly and is more token efficient, but a blogger's SVG test at max effort hit the output limit twice.
Anthropic🇺🇸Frontier
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...
Anthropic🇺🇸Frontier
The source lists only Claude Opus 5's price of $5 per million input and $25 per million output tokens. It does not document Opus 5's capabilities or intended uses, because the article covers Opus 5.5.
Anthropic🇺🇸Frontier
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
Anthropic🇺🇸Frontier
Anthropic's new top flagship — replaces the Opus tier as the strongest generally available model. Arena Elo 1508 (rank 1). 1M context, Adaptive Thinking always on, $10/$50 per MTok. Fable 5 + Mythos 5 (invite-only) launched together on June 9, 2026.
Anthropic🇺🇸Frontier
Current Opus-tier model (until Claude Fable 5). Arena Elo ~1490. 1M context, Adaptive Thinking, knowledge through Jan 2026. $5/$25 per MTok direct, similar on OpenRouter.
Anthropic🇺🇸Frontier
A few generations before Fable 5 — but in thinking mode Arena Elo 1502, rank 3 worldwide. Still relevant for setups where Extended Thinking is desired and Fable 5's Adaptive Thinking isn't enough.