Anthropic

New flagship model Opus 5.5 ("Daily driver for agentic coding and enterprise work") launched at $4/MTok input, $20/MTok output, replacing Opus 5; Opus 5 moved to Legacy models at its original $5/$25 pricing.

New Managed Agents API pricing launched: build and deploy agents at scale with composable APIs, $0.08 per session-hour for active runtime, standard token rates apply. Added 'fast mode' for Opus 4.8: up to 2.5x faster speeds at 2x standard token pricing.

Opus 4.8 tagline changed from 'Most intelligent model for agents and coding' to 'Ideal for complex agentic coding and enterprise work', emphasizing enterprise use.

Opus 4.8 launched as new flagship API model (same $5/$25 per MTok pricing as Opus 4.7); Opus 4.7 moved to legacy section. New fast mode available for Opus 4.8 at 2x standard pricing for up to 2.5x faster speeds.

Pro plan Microsoft Office integrations consolidated: Claude for Excel, PowerPoint, and Word (beta) replaced by Claude for Microsoft 365 and Claude for Microsoft Outlook.

API tools section relabeled from 'Pricing for tools' to 'Pricing for Claude Platform features', reflecting expanded platform positioning beyond standalone tools. Managed Agents tool added to Claude Platform features: build and deploy agents at scale with composable APIs at $0.08 per session-hour for active runtime.

Sonnet 4.6 drops the 200K-token tiered pricing used by Sonnet 4.5. Flat $3/$15 MTok replaces tiers of $3/$6 input and $15/$22.50 output. Extended caching tiers ($7.50/$0.60) also removed.

API pricing simplified by removing volume-based tiered pricing [Opus 4.6: flat $5/MTok input (was $5 for ≤200K, $10 for >200K tokens), $25/MTok output (was $25 for ≤200K, $37.50 for >200K); Sonnet 4.6: flat $3/MTok input (was $3 for ≤200K, $6 for >200K), $15/MTok output (was $15 for ≤200K, $22.50 for >200K); all prompt caching simplified to single rates; Haiku 4.5 unchanged]

Sonnet 4.5 retired from current models and moved to legacy section; now listed as first legacy model (previously Opus 4.5 was first legacy) Sonnet 4.6 introduced to current API models replacing Sonnet 4.5 at same price point ($3 input / $15 output per MTok)

Opus 4.5 replaced by Opus 4.6 with tiered context-length pricing: input now $5/MTok (<=200K) or $10/MTok (>200K); output $25/MTok (<=200K) or $37.50/MTok (>200K); prompt caching adds >200K tier.

Opus 4.5 moved from Latest models to Legacy models section; Opus 4.6 input pricing: added >200K token tier at $10/MTok (2x the ≤200K rate of $5/MTok); Opus 4.6 output pricing: added >200K token tier at $37.50/MTok (1.5x the ≤200K rate of $25/MTok); Opus 4.6 prompt caching: added >200K token tier (Write $12.50/MTok, Read $1/MTok)

Holiday promotional banner removed: paid subscribers no longer receive 2x higher usage limits. The temporary 'Happy holidays' promotion offering doubled usage through 12/31 has expired.

Opus 4.1 removed from latest models section and moved to legacy models Haiku input price increased from $0.80/MTok (v3.5) to $1/MTok (v4.5) - 25% increase

Sonnet 4.5 prompt caching introduced tiered thresholds at 200K tokens for write ($3.75/MTok for ≤200K, $7.50/MTok for >200K) and read ($0.30/MTok for ≤200K, $0.60/MTok for >200K) Sonnet 4.5 introduced tiered pricing based on prompt length: input $3/MTok for ≤200K tokens and $6/MTok for >200K tokens; output $15/MTok for ≤200K tokens and $22.50/MTok for >200K tokens

Web search tool added at $10 per 1,000 searches Code execution tool added at $0.05 per hour per container with 50 free hours daily per organization