Guides
AI model guide
Reference pages on the AI models we cover. Each one starts with a quick answer, lists the key facts and links every source, with the date we last checked it.
Claude Opus 5.5: price, context window and specs
Claude Opus 5.5 explained: released 22 Sep 2026, $4/$20 API pricing, 1M context, medium default effort, plan access and how to use it in Claude Code.
Last checkedClaude Sonnet 5.5: price, context window and specs
Claude Sonnet 5.5 explained: released 28 Sep 2026, $2/$10 API pricing, $0.10 cache reads, 1M context, effort defaults and how to use it in Claude Code.
Last checkedClaude Haiku 5.5: price, context window and specs
Claude Haiku 5.5 explained: released 7 Oct 2026, pricing from $0.10/$0.50 by prompt length, 1M context, effort levels and use as a Claude Code subagent.
Last checkedClaude Fable 5.1: price, context window and specs
Claude Fable 5.1 explained: released 1 Sep 2026, $10/$50 API pricing, $0.25 cache reads, 1M context, plan access and how to select it in Claude Code.
Last checkedGPT-6 explained: Astra, Sol and Luna models
OpenAI's GPT-6 family explained: GPT-6 Astra, GPT-6.1 Sol, GPT-6 Sol and GPT-6 Luna, with release dates, API prices, context window and where each runs.
Last checkedGPT-6.1 Sol: price, context window and Codex use
GPT-6.1 Sol explained: released 29 Sep 2026, $2/$10 API pricing, $0.10 cached input, 1.05M context, Codex limits, Ultrafast and reasoning effort settings.
Last checkedGPT-6 Astra: price, context window and Codex use
GPT-6 Astra explained: OpenAI's most capable model, in the API since 3 Sep 2026, $10/$50 pricing, 1.05M context, Codex limits and Ultrafast on Pro $500.
Last checkedMeta Muse Wonder: price, context window and specs
Meta's Muse Wonder explained: released 12 Oct 2026, muse-wonder-1.0 at $4/$20 per 1M tokens, 1M context, Muse Code access and independent scores.
Last checkedMeta Muse Wonder Full: access, plans and benchmarks
Muse Wonder Full explained: Meta's most advanced model, released 12 Oct 2026, only in Muse Code on the $50 and $200 plans, with no API price yet.
Last checkedGrok 4.7: price, context window and specs
Grok 4.7 explained: released 21 Sep 2026, $2/$6 API pricing, 500K context, xhigh effort, the Fast variant in Cursor and Grok Build, and independent scores.
Last checkedMistral Large 4: price, context window and specs
Mistral Large 4 explained: public preview since 6 Oct 2026, 1.05T-parameter open-weight MoE, $1.36/$4.18 list price, 1M context and independent scores.
Last checkedDeepSeek V4.1 Flash: price, context window and specs
DeepSeek V4.1 Flash explained: released 10 Sep 2026, deepseek-flash at $0.30/$1.20 peak and half off-peak, 1M context, MIT open weights and scores.
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