Anthropic API simplifies pricing, removes volume-based tiers
What happened
Between the Mar 9, 2026 and Mar 16, 2026 captures of Anthropic's pricing page, Pulse recorded one change: 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]. 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.
It lands 26 days after Anthropic's previous change, "Anthropic API replaces Sonnet 4.5 with 4.6 at same price point" (Feb 18, 2026). Before that Pulse recorded "Anthropic API rolls out tiered pricing for Opus 4.6 by context length" (Week 7, 2026), "Anthropic API unveils Opus 4.6 pricing with new >200K token tiers" (Feb 9, 2026) and "Anthropic API ends holiday promo, drops 2x usage boost for paid subscribers" (Week 2, 2026). Anthropic has been tracked since 2024-11-17.
In the same window OpenAI, X and Microsoft 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 4.6, Sonnet 4.6 · PackagingPackage change
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]
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Opus 4.6, Sonnet 4.6 | Packaging | 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] | Package change | |
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 Mar 9, 2026 and Mar 16, 2026; the change is marked near the top of the page.
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Anthropic, the last 90 days
Full history- May 13, 2026improvedAnthropic API consolidates Microsoft 365 and Outlook integrations
- Apr 21, 2026packagingAnthropic API launches Managed Agents at $0.08 per session-hour of runtime
- Apr 4, 2026packagingAnthropic API Drops Tiered Pricing for Sonnet 4.6, Goes Flat Rate
- Mar 16, 2026packagingAnthropic API simplifies pricing, removes volume-based tiers · this change
- 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
- 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 March 2026?
No list-price increase was recorded between Mar 9, 2026 and Mar 16, 2026. The change Pulse detected was a packaging change: package change.
What changed on Anthropic's pricing page between Mar 9, 2026 and Mar 16, 2026?
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]. Pulse compared the captures it took on Mar 9, 2026 and Mar 16, 2026; the before/after table above lists each item as written on the page.
How often does Anthropic change its pricing?
Pulse recorded 5 other pricing-page changes for Anthropic in the 90 days before this one; the previous change was "Anthropic API replaces Sonnet 4.5 with 4.6 at same price point" on Feb 18, 2026; Anthropic has been tracked since 2024-11-17.