Claude 5 models

14 versions from Anthropic, reviewed by the TopReviewed AI panel.

ModelScoreStatusReleasedPrice in/outContext
Claude Sonnet 5.5
Opus-class agentic coding and knowledge work at $2/$10
9.3GA2026-09-28$2 / $101MReview →
Claude Opus 5.5
long-running agentic coding and knowledge work
9.7GA2026-09-22$4 / $201MReview →
Claude Fable 5.1
long-horizon agent work where Opus 5 falls short
9.6GA2026-09-01$10 / $501MReview →
Claude Opus 5
default frontier model for agentic work
9.5GA2026-07-24$5 / $251MReview →
Claude Sonnet 5
near-Opus agentic coding and computer use at $2/$10
8.9GA2026-06-30$2 / $101MReview →
Claude Fable 5
hardest long-horizon work money can buy
9.5GA2026-06-09$10 / $501MReview →
Claude Opus 4.8
production agentic coding workhorse
9.2GA2026-05-28$5 / $251MReview →
Claude Opus 4.7
agentic coding at the frontier
9.0GA2026-04-16$5 / $251MReview →
Claude Sonnet 4.6
best value production workhorse
8.8GA2026-02-17$3 / $151MReview →
Claude Opus 4.6
prior frontier, stable production target
8.6GA2026-02-05$5 / $251MReview →
Claude Opus 4.5
the Opus price reset, stable target
8.0GA2025-11-24$5 / $25200KReview →
Claude Haiku 4.5
high-volume low-latency worker
8.4GA2025-10-15$1 / $5200KReview →
Claude Sonnet 4.5
stable legacy workhorse
7.5GA2025-09-29$3 / $15200KReview →
Claude Opus 4.1
legacy snapshot, maintenance only
5.5retired2025-08-05$15 / $75200KReview →

Strongest: Claude Opus 5.5

Claude Opus 5.5 is Anthropic's current Opus-tier model, released September 22, 2026 as the successor to Claude Opus 5 and the first of Anthropic's 5.5-generation models (Sonnet 5.5 followed on September 28). Anthropic says it performs at the level of Claude Fable 5.1 on most work while costing about 40% less to run than Opus 5 on typical workloads, and it cut every Opus rate to $4 input and $20 output per million tokens. Independent boards back the claim: it debuted first on the Artificial Analysis Intelligence Index (58, against 53 for Fable 5.1 and GPT-6 Astra) and first on the LMArena WebDev board. Anthropic's model guide now tells customers to start with Opus 5.5 for most workloads. The one-sentence take for a buyer: this is the model to standardize on for long-running agentic coding and knowledge work, once you have handled four breaking API changes from Opus 5.

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Best value: Claude Haiku 4.5

Claude Haiku 4.5 is Anthropic's fastest, lowest-cost model, released October 15, 2025, delivering near-frontier coding and agent performance at $1/$5 per 1M tokens. The headline: it matches or exceeds Sonnet 4 on coding and computer use at roughly one-third the cost and more than twice the speed, and it is the first Haiku with extended thinking. For a buyer, the single sentence is this: route the long tail of work here, and only pay Sonnet or Opus when a job actually needs them.

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