Anthropic

Products and models

• Claude Model · 12
• Claude Haiku 4.5 Model
• Claude Haiku 5.5 Model
• Claude Opus 5 Model
• Claude Opus 5.5 Model · 2
• Claude Sonnet 5.5 Model · 3
• claude-mythos-preview Model
• Claude Code Product · 3
• Claude Marketplace Product
• Claude for Government Product
• Cyber Verification Program Product
• Project Glasswing Product

Facts we checked

Each fact was checked against the page it links to. The latest 40 of 97.

• Anthropic says the credits can be used on any of its models. Quote: "They can be used on any of our models."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Max 5x users will get $100 in credits per month, Max 20x users $200, and Team subscribers up to $500, pooled across their users. Quote: "Max 5x users will get $100 in credits per month, Max 20x users will get $200, and Team subscribers will receive up to $500, pooled across their users."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says that this week it will roll out a new monthly API credit to all Max and Team subscribers for use on the Claude Platform, usable on any of its models. Quote: "this week, we’ll roll out a new monthly API credit to all Max and Team subscribers for use on the Claude Platform"

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic's table lists Sonnet 5.5 cache writes at $2.50 per million tokens. Quote: "Cache writes $0.125 / $0.625 $1.25 $2.50"

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says cache reads make up a large share of models' token consumption, so the cut reduces the cost of Sonnet 5.5 on most agentic tasks by around 20%. Quote: "Because cache reads make up a large share of models’ token consumption, this reduces the cost of Sonnet 5.5 on most agentic tasks by around 20%."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says that starting on the day of the post (October 7, 2026) it is lowering the price of cache reads on Claude Sonnet 5.5, which now cost 50% less: $0.10 per million tokens rather than $0.20. Quote: "Cache reads now cost 50% less: $0.10 per million tokens rather than $0.20."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says prompt caching has no effect on output token generation and that the response is identical to what you would get without caching. Quote: "Prompt caching has no effect on output token generation. The response you receive is identical to what you would get if prompt caching were not used."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic names the response usage fields cache_creation_input_tokens, cache_read_input_tokens and input_tokens. Quote: "cache_creation_input_tokens: Number of tokens written to the cache when creating a new entry."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says cache hits and refreshes on Claude Opus 5.5 and Claude Sonnet 5.5 are priced at 0.05x the base input price. Quote: "Cache hits and refreshes on Claude Opus 5.5 and Claude Sonnet 5.5 are priced at 0.05x the base input price."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says 5-minute cache write tokens are 1.25 times the base input price, 1-hour cache write tokens are 2 times, and cache read tokens are 0.1 times, with per-model exceptions in the table footnote. Quote: "5-minute cache write tokens are 1.25 times the base input tokens price"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says it also offers a 1-hour cache duration at additional cost. Quote: "Anthropic also offers a 1-hour cache duration"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says the cache has a 5-minute lifetime by default and is refreshed for no additional cost each time the cached content is used. Quote: "By default, the cache has a 5-minute lifetime. The cache is refreshed for no additional cost each time the cached content is used."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says a prompt can define up to 4 cache breakpoints. Quote: "You can define up to 4 cache breakpoints if you want to:"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says automatic caching, a single cache_control field at the top level of the request, applies the cache breakpoint to the last cacheable block and moves it forward as conversations grow. Quote: "The system automatically applies the cache breakpoint to the last cacheable block and moves it forward as conversations grow."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says shorter prompts cannot be cached, even if marked with cache_control. Quote: "Shorter prompts cannot be cached, even if marked with"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic lists a minimum cacheable prompt length of 512 tokens for Claude Fable 5.1, Mythos 5.1, Opus 5.5, Opus 5, Sonnet 5.5, Fable 5, Mythos 5 and Haiku 5.5. Quote: "512 tokens for Claude Fable 5.1"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says modifying tool definitions (names, descriptions, parameters) invalidates the entire cache. Quote: "Modifying tool definitions (names, descriptions, parameters) invalidates the entire cache"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says changes at each level of the tools, system, messages hierarchy invalidate that level and all subsequent levels. Quote: "Changes at each level invalidate that level and all subsequent levels."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says prompt caching references the entire prompt, tools, system and messages in that order, up to and including the block designated with cache_control. Quote: "Prompt caching references the entire prompt:"

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says cache hits require 100% identical prompt segments, including all text and images up to and including the block marked with cache control. Quote: "Cache hits require 100% identical prompt segments, including all text and images up to and including the block marked with cache control."

  Prompt caching · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says to install it from the Google Workspace Marketplace. Quote: "Install it from the Google Workspace Marketplace"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says that on Enterprise plans the Compliance API, customer-managed encryption keys (CMEK) and OpenTelemetry audit export apply to the add-on. Quote: "On Enterprise plans, controls such as the Compliance API, customer-managed encryption keys (CMEK), and OpenTelemetry audit export apply to the add-on too"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says it is also releasing Google Docs, Sheets and Slides connectors (beta) that Claude uses to create and edit Google files directly from Claude. Quote: "we are releasing new Google Docs, Sheets, and Slides connectors (beta) that Claude uses to create and edit Google files directly from Claude"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says the default Ask before edits mode shows an approval card for each change and waits, while Accept all edits mode applies changes without stopping. Quote: "In the default “Ask before edits” mode, each change appears as an approval card with a summary and Claude waits for your approval to make the edit."

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• In Slides, Anthropic says Claude can build new slides from the deck's layouts and themes and flag elements that overlap or run off the slide. Quote: "Claude can build new slides from your deck"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• In Sheets, Anthropic says Claude can write formulas, build pivot tables and native Sheets charts, add new tabs, and pull a range into Python and write the results back. Quote: "Claude can write formulas, build pivot tables and native Sheets charts, and add new tabs."

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• In Docs, Anthropic says Claude can fix a sentence or restyle a heading in place, and propose edits for bigger rewrites as suggestion cards in the sidebar. Quote: "For bigger rewrites, it can propose edits as suggestion cards in the sidebar."

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Claude opens in a sidebar next to the file and can read the open file, see selected text, cells or slides, and make changes directly in the file. Quote: "Claude opens in a sidebar next to your file"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Claude for Google Workspace is now in public beta on all paid Claude plans and adds Claude to Google Docs, Sheets and Slides. Quote: "Claude for Google Workspace™ is now in public beta on all paid Claude plans. It adds Claude to Google Docs, Sheets, and Slides"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic's article is dated October 6, 2026. Quote: "Date October 6, 2026"

  Claude now works with Google Docs, Sheets, and Slides · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• On Anthropic's benchmark table Haiku 5.5 scores 72.4% on OSWorld 2.1 (offline subset), Haiku 4.5 15.7%, GPT-6 Luna 48.9% and Sonnet 5.5 83.9%. Quote: "72.4% Offline subset 15.7% Offline subset 48.9% Offline subset 83.9% Offline subset"

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Haiku 5.5 is available on Amazon Web Services, Google Cloud and Microsoft Azure, and on the Claude Platform as claude-haiku-5-5. Quote: "Claude Haiku 5.5 is available now on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• The documentation says the same text counts as approximately 30% more tokens on Haiku 5.5 than on Haiku 4.5. Quote: "the same text counts as approximately 30% more tokens than on Claude Haiku 4.5"

  Claude Haiku 5.5 overview · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic documentation gives Haiku 5.5 a 1M token context window and up to 128k output tokens. Quote: "a 1M token context window, and up to 128k output tokens"

  Claude Haiku 5.5 overview · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Haiku 5.5 is priced 90% lower than Haiku 4.5 for requests up to 100,000 tokens and 50% lower for requests over 100,000 tokens. Quote: "Claude Haiku 5.5 is priced 90% lower than Claude Haiku 4.5 for requests up to 100,000 tokens, and 50% lower for requests over 100,000 tokens."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Haiku 5.5 now costs around 75% less to run on average than Haiku 4.5. Quote: "On average, it now costs around 75% less to run."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Haiku 5.5 is its first Haiku-class model with an adjustable effort setting. Quote: "Haiku 5.5 is our first Haiku-class model to come with an adjustable effort setting."

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic describes Claude Haiku 5.5 as the cheapest, fastest and most capable small model it has released. Quote: "Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model"

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic published Introducing Claude Haiku 5.5 dated October 7, 2026, with the model ID claude-haiku-5-5. Quote: "October 7, 2026"

  Introducing Claude Haiku 5.5 · Anthropic · archived copy · checked 8 Oct 2026 · Cite this fact · the story

• Anthropic says Project Glasswing partners uncovered at least 129,000 verified software vulnerabilities between April and July 2026 and its own scanning found 5,500 more between April and October 2026; of these together, more than 33,000 have so far been rated critical- or high-severity, a figure based on survey data from a subset of partners.

  Cyber Verification Program · Anthropic · archived copy · checked 7 Oct 2026 · Cite this fact · the story

Numbers over time

Prices, context windows and test scores we checked. Each number links to the fact it comes from.

All 19 stories

• 8 Oct Agents and appsHow prompt caching bills a repeated prompt start
• 8 Oct Money and computeAnthropic halves the Sonnet 5.5 cache-read price to $0.10 per million tokens
• 8 Oct Agents and appsAnthropic adds Claude sidebar to Google Docs, Sheets and Slides
• 8 Oct Models and releasesAnthropic cuts small-model prices with Claude Haiku 5.5
• 7 Oct Safety and securityAnthropic sets three access tiers in its Cyber Verification Program
• 5 Oct Models and releasesAWS lists Claude Opus 5, Sonnet 5 and Haiku 4.5 on Bedrock in India, served from Mumbai and Hyderabad.
• 5 Oct Safety and securitySix AI leaders sign voluntary commitment on frontier model controls
• 3 Oct Agents and appsAnthropic launched Claude Frontier Academy with a $100 million commitment, aiming to train 10,000 engineers by end of 2027.
• 2 Oct Agents and appsAnthropic opens Claude for Government to federal and state agencies
• 1 Oct ResearchAnthropic says GLM-5.3 builds exploits close to Claude Mythos Preview
• 30 Sep Models and releasesAnthropic releases Claude Sonnet 5.5, which it says is faster than Sonnet 5
• 28 Sep Agents and appsClaude Marketplace lists over 2,000 connectors and plugins, plus agents and partners
• 28 Sep Laws and rulingsAppeals court upholds Pentagon supply-chain risk label on Anthropic
• 28 Sep ResearchProgramDistill, a benchmark built from 26 web apps, scores GPT-6 Astra at 49.2 percent and Claude Opus 5 at 28.8.
• 27 Sep Agents and appsClaude Code 2.1.280 sets Opus 5.5 as the default Opus model, with a 1M-token window
• 26 Sep ResearchStudy finds most tested coding-agent harnesses let agents delete their own execution traces
• 25 Sep Agents and appsGitHub Security Lab open-sources an autonomous fuzzing pipeline
• 24 Sep ResearchAnthropic says Claude found a new bacteriophage enzyme system
• 22 Sep Models and releasesAnthropic released Claude Opus 5.5 with a 1M-token context window

Cases

Ongoing case: Anthropic's Claude modelsOngoing case: Cyber-capable AI modelsOngoing case: Frontier model API pricesOngoing case: Million-token context windowsOngoing case: OpenAI's modelsOngoing case: The White House and AI rules

Its own pages

Pages the company published that our stories cite.

• Introducing Claude Haiku 5.5 · www.anthropic.com
• Cyber Verification Program · www.anthropic.com
• GLM-5.3 and the spread of advanced cyber capabilities · www.anthropic.com
• Claude Sonnet 5.5 · www.anthropic.com
• Claude discovers a novel enzyme system with CRISPR-like repeats · www.anthropic.com
• Claude Frontier Academy · www.anthropic.com
• Prompt caching · platform.claude.com
• Claude now works with Google Docs, Sheets, and Slides · claude.com