Alternatives to Claude Fable 5.2

Anthropic's Mythos-class flagship made safe for general use, with 1M-token context, frontier coding and vision, days-long agentic autonomy, and $10/$50 per 1.

Anthropic's generally available Fable-class model for coding and knowledge work. $10/$50 per 1M tokens, cache reads $0.25, API id claude-fable-5-1.

Claude Haiku 4.5 is Anthropic's October 2025 small model: $1/$5 per million tokens, 200K context, now a legacy model with Claude Haiku 5.5 as the successor.

Anthropic's most capable model for cybersecurity and biology, gated behind invite-only access; the same model as Claude Fable 5.1 with relaxed safeguards.

Anthropic's frontier Opus model with 1M-token context and effort-controlled reasoning, near-Fable-5 intelligence at Opus-4.8 pricing for agents and coding.

Claude 3.5 Sonnet, Anthropic's June 2024 model with a 200K context window, was retired on October 28, 2025 and replaced by Claude Sonnet 5.5.

Anthropic's most capable hybrid reasoning model: 1M-token context, adaptive thinking, and industry-leading agentic coding results.

Claude 3 Haiku (claude-3-haiku-20240307) was Anthropic's small, low-cost model from March 2024. It was retired on April 20, 2026; Claude Haiku 4.5 replaced it.

Anthropic's previous Opus snapshot: 200k context, $5/$25 per 1M tokens. Later billed lines include Opus 4.6 and Opus 5.

Anthropic's previous Sonnet snapshot: 200k context, $3/$15 per 1M tokens. Docs now sell newer Claude 4.6 and Claude 5 lines.

Claude v1 is Anthropic's first-generation API model line (claude-1.0 to claude-1.3), retired on November 6, 2024 and replaced by Claude Haiku 4.5.

Anthropic's fast, low-cost Claude model for high-volume summaries, classification, browser use, and coding subagents.

Claude Sonnet 5 is Anthropic's legacy mid-tier model, released June 30, 2026 at $2/$10 per million tokens with a 1M context window; Sonnet 5.5 replaces it.