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The Stack / Chat Assistants

Claude

02 Decisions

Yes — Claude is the default reasoning engine in this stack. Pro now runs Opus 5.5 by default, Fable-5.1-level on most work, and Claude Code turns it into a hands-on builder. If you only pay for one assistant, pay for this one.

The job in the stack

The thinking seat: long documents, hard reasoning, code, and anything where the words have to be right the first time.

Pricing

Plan Price Notes
Free $0 Sonnet 5 as default model, daily limits
Pro $20/mo $17/mo billed annually ($200 upfront). More usage, Claude Code, Projects; Opus 5.5 is the default model since Sep 22, 2026; Fable 5.1 metered via usage credits
Max $100–200/mo 5x–20x Pro limits for heavy daily use; Opus 5.5 is the default model. Fable 5.1 included up to 50% of weekly limits. Monthly billing only. Includes monthly Claude API credit ($100 on 5x, $200 on 20x) for the API, Agent SDK and Managed Agents (not Claude Code); no rollover
Team $20–25/user/mo Standard seat $20/mo annual or $25 monthly — more usage than Pro, admin controls, enterprise search. Premium seat $100 annual / $125 monthly for 5x standard usage. Premium seats include Fable 5.1 up to 50% of weekly limits. Pooled monthly API credit: $20 per Standard seat, $100 per Premium seat, capped at $500/mo (not Claude Code); no rollover
Enterprise $20/seat/mo + usage Annual contracts only; seat fee plus usage at API rates. Opus, Sonnet, Haiku and Fable included
API (Sonnet 5.5) $2/M input $10/M output, cache reads $0.10/M. Same rate as Sonnet 5 — Anthropic cancelled the planned Sep 1, 2026 rise to $3/$15 on Aug 11, 2026
API (Opus 5.5) $4/M input $20/M output, cache reads $0.20/M — Fable-5.1-level on most work at 40% of Fable's rate. Opus 5 was $5/$25
API (Fable 5.1) $10/M input $50/M output — the frontier tier, priced like it

Pricing verified 2026-10-14. Plans change — the source of truth is Claude's own pricing page.

Models & versions

  • Claude Opus 5.5 Released Sep 22, 2026 — first of the Claude 5.5 family. Performs at Fable 5.1's level on most work per Anthropic, with output over 30% faster than Opus 5. API $4/M in, $20/M out (20% under Opus 5), cache reads $0.20/M; a faster variant runs $8/$40. The default model in the Claude app, Cowork, and Claude Code on Pro, Max, and Team since launch; also on seat-based Enterprise. Haiku 5.5 followed on Oct 7
  • Claude Sonnet 5.5 Released Sep 28, 2026 — second model in the Claude 5.5 family. Keeps Sonnet 5 API pricing ($2/M in, $10/M out), 1M-token context; Anthropic reports output over 30% faster and up to 30% lower cost per task. Positioned as the faster everyday complement to Opus 5.5: scoped tasks, bug fixes, documents, slides and spreadsheets.
  • Claude Fable 5.1 Released Sep 1, 2026 — supersedes Fable 5 as the frontier model. Same $10/M in, $50/M out, but cache reads cut 75% to $0.25/M (roughly 25% cheaper on typical workloads, up to 45% on agentic ones). Outperforms Fable 5, Opus 5, and GPT-5.6 Sol on released benchmarks; big jump on Terminal-Bench-Science (52.6% vs Fable 5's 24.7%)
  • Claude Mythos 5.1 Same model as Fable 5.1 with different safeguards, limited to vetted US organizations via trusted-access programs for cybersecurity and life-sciences work. Priced identically to Fable 5.1. Not something you can just sign up for — treat it as a preview, not a seat
  • Claude Opus 5 Superseded by Opus 5.5 on Sep 22, 2026. Was the near-Fable-5 value rung at $5/M in, $25/M out with a 1M-token context; Anthropic has not announced a retirement date
  • Claude Sonnet 5 Default on Free, and the cheap API workhorse at $2/$10. Pro, Max, and Team moved their default to Opus 5.5 on Sep 22, 2026
  • Claude Opus 4.8 Superseded by Opus 5 on July 24, 2026; same API price, lower capability
  • Claude Haiku 5.5 Released Oct 7, 2026. Anthropic's fastest, cheapest model for high-volume work (summaries, classification, sub-agents under Opus/Sonnet 5.5). API $0.10/M in, $0.50/M out up to 100K tokens ($0.50/$2.50 above); the first Haiku with an effort setting
  • Claude Haiku 4.5 Superseded by Haiku 5.5 on Oct 7, 2026, which costs a tenth as much on the API
  • Claude Duet (research preview) Announced Oct 21, 2026: a proactive agent built on Opus 5.5 that watches your connected work apps, sends a morning brief, and messages you only when something needs attention. It handles scheduling, forecasts, dashboards and prototypes, and checks with you before consequential actions. Waitlist only, for US Pro and Max subscribers, on iOS, Android and the web. Team and Enterprise are not included yet. There is no separate price; background work counts against your plan limits.
  • Unified Claude app (Chat + Cowork) Announced Sep 16, 2026: Chat and Cowork merged into one Claude, which decides what each task needs. Cowork's longer tasks keep running in the cloud after you close the laptop. Design is folded in, and Claude Docs and Claude Slides were added (export to PowerPoint or PDF). Rolling out to Pro and Max first, then Team and Free; Enterprise admins get 30 days' notice. No pricing change announced
  • Claude Dashboards + Claude Motion (beta) Launched in beta October 8, 2026. Dashboards builds live, auto-refreshing charts from warehouses (BigQuery, Snowflake, Databricks, Redshift, ClickHouse) and CRMs like Salesforce, shows the query behind every number, and draws on the plan's usage allowance. Motion turns content into short animated explainers built as code (no video-generation model), exported as MP4, and is limited to Team and Enterprise. Which individual plans get Dashboards is reported inconsistently. Enterprise admins switch both on under Organization settings > Artifacts
  • Claude for Google Workspace (beta) Public beta from October 6, 2026 on all paid plans (Pro, Max, Team, Enterprise) at no extra charge. A sidebar add-on reads and edits the open Doc, Sheet or Slides deck (formulas, pivot tables, charts, slides in the deck's own layouts), defaulting to 'Ask before edits'; connectors create and edit Google files from chat within existing sharing permissions. Team and Enterprise admins enable it first

The honest read

What works

  • + Best-in-class long-document reasoning and writing quality
  • + Claude Code is the strongest agentic coding tool on the market
  • + Background computer use (beta, Pro/Max, Mac and Windows desktop) lets Cowork and Code click and type without taking over your screen — connectors like Slack come first, screen control only asks permission when it's actually needed
  • + Sonnet 5 API pricing ($2/M in, $10/M out) is permanent — it undercuts rivals at the workhorse tier
  • + Projects and memory make it a genuine work environment, not a chat toy

What breaks

  • − Fable 5 access is metered even on paid plans — heavy use gets expensive
  • − No native image generation — you still need an image seat in the stack
  • − Usage limits on Pro can pinch during long agentic sessions
  • − Identity verification (government ID + live selfie, via Persona) can be triggered on some accounts for platform-integrity or age checks, effective July 8, 2026

Use it for

  • →Operators who write for a living — scripts, briefs, newsletters
  • →Builders using Claude Code as their engineering seat
  • →Long-context work: contracts, research digests, codebases

Skip it if

  • ×You mainly want image/video generation in one app — that's not this
  • ×Your volume is light and free-tier ChatGPT or Gemini already covers it

Questions operators ask

?Is Claude Pro worth $20 a month?

If you write, plan, or code daily — yes. Pro defaults to Opus 5.5 (Fable-5.1-level on most work) and includes Claude Code, which clears the bar on the first serious work session. If you only chat, Free's Sonnet 5 covers it.

?What is the difference between Fable 5.1 and Sonnet 5?

Fable 5.1 is the frontier model — deepest reasoning, priced accordingly ($10/M input via API, metered on plans). Sonnet 5 is the fast workhorse: the Free default and the cheapest API tier at $2/M. On Pro, Max, and Team the default is now Opus 5.5, which sits between them and matches Fable on most work. Escalate to Fable 5.1 only when a task actually needs it.

?Does Claude generate images?

No. Claude is text, reasoning, and code. Keep a separate image seat (Midjourney or Leonardo) in the stack.

What changed

  1. NEWS SCAN (catch-up): since Oct 7, Max and Team plans include a monthly Claude API credit. Max 5x gets $100 and Max 20x $200. Team pools $20 per Standard seat and $100 per Premium seat, capped at $500. The credit covers the API, Agent SDK, Managed Agents and playground, but not Claude Code or in-app extra usage. It expires each cycle. Source: Claude Platform docs (api-credits-for-subscribers). Plan prices were not re-verified, so last_verified holds.
  2. NEWS SCAN: Anthropic announced Claude Duet on Oct 21. It is a proactive agent (research preview, waitlist) for US Pro and Max subscribers, built on Opus 5.5. It watches connected apps, sends a morning brief, and asks before consequential actions. It has no separate price, and background work draws on plan limits. Added to models. Sourced from launch coverage (Thurrott, iPhone in Canada). Pricing not re-verified, so last_verified holds.
  3. Re-verified on claude.com/pricing: Pro $20 ($17/mo annual), Max from $100 (monthly only), Team Standard $25/$20 and Premium $125/$100. Added: Max and Team Premium include Fable 5.1 up to 50% of weekly limits; Enterprise row ($20/seat/mo annual + usage at API rates). API rows confirmed (Fable 5.1 $10/$50, Opus 5.5 $4/$20, Sonnet 5.5 $2/$10, Haiku 5.5 $0.10/$0.50 to 100K); the Sonnet row now names Sonnet 5.5.
  4. NEWS SCAN: Claude for Google Workspace entered public beta on October 6, 2026 for all paid plans — a Docs/Sheets/Slides sidebar add-on with approve-before-edit by default, plus Google file connectors. Added to models and features. Sourced from launch coverage. Verdict unchanged.
  5. NEWS SCAN: Claude Haiku 5.5 released October 7, 2026 at $0.10/$0.50 per M tokens (up to 100K-token prompts), down from Haiku 4.5's $1/$5, with an effort setting. Added to models; Haiku 4.5 marked superseded. Sourced from launch coverage. Verdict unchanged.
  6. NEWS SCAN: Anthropic put Claude Dashboards (live charts from data warehouses and CRMs) and Claude Motion (code-built animated explainers, MP4 export, Team/Enterprise only) into beta on October 8, 2026. Added to models. Sourced from launch coverage (The Decoder, TestingCatalog). Plan-level availability for Dashboards on Pro/Max is not settled across sources, so no plan notes were changed. Verdict unchanged: Dashboards edges into Outcomes-layer reporting but does not replace a dedicated analytics seat.
  7. NEWS SCAN: Anthropic released Claude Sonnet 5.5 on September 28, 2026 at unchanged Sonnet 5 API pricing ($2/$10 per M tokens), with a 1M-token context and output over 30% faster per Anthropic. Added to models. Verdict unchanged. Which consumer plans default to it was not confirmed, so the plan notes still name Sonnet 5.
  8. NEWS SCAN: Anthropic is merging Chat and Cowork into a single Claude app (announced Sep 16, rolling out to Pro/Max first), adding Claude Docs and Slides. Added to models. No pricing change, and pricing wasn't re-verified this pass.
  9. Resolves the 09-23 open question: Opus 5.5 is the default model in the Claude app, Cowork, and Claude Code on Pro, Max, and Team (stated by Anthropic's Claude Code lead at launch; Claude Code docs coverage agrees that the 'default' and 'opus' aliases resolve to Opus 5.5). Sonnet 5 stays the Free default. Rewrote the verdict, Pro/Max notes, model notes, and both FAQ answers, plus the Sonnet-as-Pro-default lines in the chat-assistant guide, the model-routing guide, the Claude Pro guide, and the best-assistant ranking.
  10. Re-verified on claude.com/pricing: Free $0, Pro $20 monthly ($17/mo annual, $200 upfront), Max from $100 (5x) and 20x tier. Corrected the Team row — we carried $25–30/user, the page shows a Standard seat at $20 annual / $25 monthly and a Premium seat at $100 annual / $125 monthly (5x standard usage). Pro's comparison table confirms Opus access and Fable via usage credits; relabelled Fable 5 → 5.1 in the Pro note.
  11. NEWS SCAN: Anthropic released Claude Opus 5.5 on September 22, 2026 — Fable-5.1-level on most work per Anthropic, output 30%+ faster than Opus 5, API $4/$20 per M tokens (from $5/$25), cache reads $0.20/M. Available on Pro, Max, Team, and seat-based Enterprise. Added to models, replaced the Opus 5 API row, relabelled the Fable API row to 5.1. Sonnet 5.5 and Haiku 5.5 are announced for the coming weeks. Verdict holds: Sonnet 5 is still the Pro default workhorse.
  12. NEWS SCAN: Anthropic shipped background computer use in beta on September 2, 2026 — Claude Cowork and Claude Code can now click, type, and open apps on macOS and Windows Desktop without taking over the screen, mouse, or keyboard, so you keep working while it runs. Pro and Max only. It reaches for direct connectors (Slack, etc.) before falling back to screen control, and asks permission before taking the whole screen. Added as a pro; no pricing change.
  13. NEWS SCAN: Anthropic released Claude Fable 5.1 and Claude Mythos 5.1 on Sep 1, 2026 — Fable 5.1 supersedes Fable 5 as the frontier model everywhere (Claude.ai, API as claude-fable-5-1, Claude Code, Enterprise, AWS/GCP/Azure). Base API pricing holds at $10/$50 per M, but cache reads drop 75% to $0.25/M — a real cost cut for anyone running long agentic Claude Code sessions. Mythos 5.1 is the same model with different safeguards, gated to vetted orgs for cybersecurity/life-sciences work. Fable 5 and Mythos 5 entries replaced.
  14. Freshness sweep, one change that matters: Sonnet 5's $2/$10 API pricing is permanent. Anthropic announced on Aug 11, 2026 that the increase to $3/$15 scheduled for Sep 1 will not happen — the launch rate is now the standard rate. If you costed a build assuming a September rise, that budget is now conservative. Also added: Claude Mythos 5, a limited-availability frontier model at Fable 5 prices, and Opus 5's fast mode (research preview, $10/$50). Consumer plans unchanged — Free, Pro $20, Max $100-200, Team $25-30/user.
  15. NEWS SCAN: Claude Opus 5 launched July 24, 2026 — 1M-token context in, 128K out, priced at $5/$25 per million tokens (the same rate Opus 4.8 held) and landing close to Fable 5 on capability at half Fable 5’s API price. It is now the default model on Max and the strongest model reachable on Pro. Opus 4.8 marked superseded; API pricing row added.
  16. NEWS SCAN: Anthropic launched Reflect (July 9, beta) — a built-in usage dashboard for Free/Pro/Max users with Memory enabled, showing topic breakdowns and activity patterns over 1/3/6/12 months, plus quiet-hours and break-nudge controls. Draws from Memory's compressed pattern summary, not raw transcripts; incognito chats excluded. Not a pricing or plan change — noted as a feature update.
  17. NEWS SCAN: Anthropic's identity-verification policy took effect July 8 — select accounts may be asked for a government ID plus a live selfie (processed by Persona) as part of routine platform-integrity or age checks; not required for all users. Not a pricing change; added as a trust-and-privacy disclosure per house voice. Separately confirmed the June 12 export-control suspension of Fable 5/Mythos 5 was fully resolved by July 1 (global Fable 5 access restored) — already correctly reflected here, no other changes needed.
  18. Verified plans and API pricing. Fable 5 moves to usage credits July 7; Sonnet 5 intro pricing runs through Aug 31, 2026.
  19. Claude Fable 5 launched — first model of the Claude 5 family, above Opus in capability.
  20. Claude Sonnet 5 released and made the default model on Free and Pro plans.

Give Claude a job

The thinking seat: long documents, hard reasoning, code, and anything where the words have to be right the first time.

Try Claude →

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