Anthropic API rolls out tiered pricing for Opus 4.6 by context length
What happened
Between the Feb 4, 2026 and Feb 9, 2026 captures of Anthropic's pricing page, Pulse recorded one change: 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. Pulse files it as a packaging change (package change) with a neutral direction. Pulse's latest capture (Oct 12, 2026) lists Haiku 4.5 at $5 per MTok output + $1.25 per MTok cache write, Sonnet 5 at $2 per MTok input + $10 per MTok output, Opus 5 at $6.25 per MTok cache write + $0.5 per MTok cache read, Fable 5 at $12.5 per MTok cache write + $1 per MTok cache read and Opus 4.8 at $6.25 per MTok cache write + $5 per MTok input.
Anthropic's previous recorded change was "Anthropic API unveils Opus 4.6 pricing with new >200K token tiers" (Feb 9, 2026). Before that Pulse recorded "Anthropic API ends holiday promo, drops 2x usage boost for paid subscribers" (Week 2, 2026) and "Anthropic API Cuts Flagship Opus Model Prices by 67% in Major Update to Version 4.5, Launching New Pricing Structure" (Jan 10, 2026). Anthropic has been tracked since 2024-11-17.
In the same window Microsoft, OpenAI and X also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Opus 4.5, Opus 4.6 · PackagingAddedNo >200K tier>200K tier
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Opus 4.5, Opus 4.6 | Packaging | No >200K tier | >200K tier | Added |
Values as written on Anthropic's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of Anthropic's pricing page (anthropic.com) from Feb 4, 2026 and Feb 9, 2026; the change is marked near the top of the page, where >200K tier now appears.
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Anthropic, the last 90 days
Full history- Apr 4, 2026packagingAnthropic API Drops Tiered Pricing for Sonnet 4.6, Goes Flat Rate
- Mar 16, 2026packagingAnthropic API simplifies pricing, removes volume-based tiers
- Feb 18, 2026packagingAnthropic API replaces Sonnet 4.5 with 4.6 at same price point
- Week 7, 2026packagingAnthropic API rolls out tiered pricing for Opus 4.6 by context length · this change
- Feb 9, 2026packagingAnthropic API unveils Opus 4.6 pricing with new >200K token tiers
- Week 2, 2026packagingAnthropic API ends holiday promo, drops 2x usage boost for paid subscribers
- Jan 10, 2026packagingAnthropic API Cuts Flagship Opus Model Prices by 67% in Major Update to Version 4.5, Launching New Pricing Structure
Across AI & Machine Learning in the same window
All AI & Machine Learning changesQuestions about this change
Did Anthropic raise prices in February 2026?
No list-price increase was recorded between Feb 4, 2026 and Feb 9, 2026. The change Pulse detected was a packaging change: package change.
What changed on Anthropic's pricing page between Feb 4, 2026 and Feb 9, 2026?
Opus 4.5, Opus 4.6 packaging: No >200K tier → >200K tier, added. Pulse compared the captures it took on Feb 4, 2026 and Feb 9, 2026; the before/after table above lists each item as written on the page.
How often does Anthropic change its pricing?
Pulse recorded 3 other pricing-page changes for Anthropic in the 90 days before this one; the previous change was "Anthropic API unveils Opus 4.6 pricing with new >200K token tiers" on Feb 9, 2026; Anthropic has been tracked since 2024-11-17.