New Claude Opus 5.5 · Sonnet 5.5 · Fable 5.1

Claude AI development for work that has to be right

We build on Anthropic's Claude to read long documents, write and review code, and run agents across your business systems — with the evals, permissions and cost controls that production needs.

4 modelsHaiku to Fable
MCPopen tool standard
4 cloudsAPI, AWS, GCP, Azure
Master Services Agreement.pdfpage 1 / 320
Risk · clause 14.2Auto-renews for 3 years unless cancelled 90 days before expiry.p.41
Cost · schedule BAnnual price rise capped at CPI + 2%.p.212
MissingNo data-breach notification time is defined.p.—

Illustrative demo with sample content.

01The Claude family

Four models, one ladder: pick by depth, speed and cost

Anthropic's current line-up runs from the fast Haiku to the frontier Fable. Choose a model to see what we use it for. Most products combine two or three of them.

← faster, cheaperdeeper reasoning →
02Extended thinking

Let Claude think before it answers

With extended thinking, Claude works through a problem step by step before replying. It costs more time and tokens, so we switch it on only where the extra care pays off. Toggle it to compare.

“Should we renew our supplier contract at a 7% price increase?”

  1. 1Find current annual spend in the contract schedule: ₹1.2 crore.
  2. 27% of that is about ₹8.4 lakh a year extra.
  3. 3Compare with the two quotes in the attached emails: 4–5% lower.
  4. 4Check exit terms: clause 14 allows 60 days' notice, no penalty.
  5. 5Weigh switching cost against savings, then recommend a counter-offer.
Catches the important details
Time to answer
Tokens used

Illustrative example with sample figures. We decide per task whether thinking is worth it, based on evals.

03Agents and MCP

Agents that use your tools, safely

With the Claude Agent SDK and the Model Context Protocol (MCP), Claude can work across your systems: look things up, update records and finish multi-step jobs. We design the tools, permissions and checkpoints so it stays inside the lines.

  1. Understand the goalClaude reads the request and the context it has been given.
  2. Plan the stepsIt breaks the job down and decides which tools it needs.
  3. Use tools via MCPIt queries your CRM, database or files through MCP servers, with your permissions.
  4. Check the resultIt reads what came back and verifies it before moving on.
  5. Ask or finishIt asks a person before risky actions, then reports what it did.
04Claude Code

Ship software faster with Claude Code

Claude Code works in the terminal and IDE: it reads the codebase, plans a change, edits files, runs the tests and prepares a pull request. Our engineers use it daily and set it up for client teams with the right guardrails.

~/shop-api
  • Whole-codebase understandingFinds the right files and follows your conventions instead of guessing.
  • Tests in the loopRuns your test suite and fixes failures before handing back.
  • Permissions and reviewAllowed commands, protected branches and human review on every pull request.
  • In CI and automationRuns headless for migrations, dependency upgrades and code review on pull requests.
05Long documents

Reads the whole file, then shows its work

Claude is at its best with long, dense material: contracts, tenders, policies, research and codebases. With citations, every finding links back to the exact passage, so reviewers can check it in seconds.

0Claude models matched to the task
0clouds to run it on: Anthropic, AWS, Google Cloud, Azure
0lower price for batch jobs that can wait
0of findings must cite a source passage — our review rule
UploadPDFs, Word files, scans and spreadsheets
ReadThe full document, tables and appendices included
ExtractClauses, dates, amounts and obligations into fields
CiteEvery point linked to its page and paragraph
ReviewA person approves, edits or rejects each finding
06Running costs

The same results for a fraction of the bill

Claude bills by tokens, so architecture decides the cost. Sending everything to the biggest model is the most expensive way to build. Here is how the levers typically stack up.

Relative monthly cost

Starting point = 100. An illustrative workload, not a quote.

Everything on Opus100
Routed: Haiku + Sonnet + Opus46
+ prompt caching31
+ batch for overnight jobs24
  • Model routingHaiku handles the easy majority; Sonnet and Opus only see what needs them.
  • Prompt cachingLong instructions and documents that repeat across requests are cached and billed at a fraction of the normal input price.
  • Message Batches APIWork that can wait (reports, back-office processing) runs at half price.
  • Tight outputsStructured, concise answers mean fewer output tokens, which cost the most.
07Where it runs

Claude in the cloud you already use

Pick the platform that fits your security, billing and data-residency rules. We build so you can switch later if you need to.

Claude API (Anthropic)

Direct access with the newest features first: prompt caching, batches, files, citations and tool use.

AI development →

Amazon Bedrock

Claude inside your AWS account, with IAM, VPC endpoints and AWS billing.

AWS services →

Google Cloud Vertex AI

Claude on Google Cloud with your existing projects, IAM and data residency.

Google Cloud →

Microsoft Foundry

Claude alongside your Azure services, identity and governance.

Azure services →
08Safety and privacy

Why regulated teams choose Claude

Anthropic is a safety-focused AI company, and that shows in how Claude is trained and offered. We add the controls your compliance team will ask for.

Built with safety at the core

Anthropic trains Claude against a published constitution and tests each model before release, reporting how it handles misuse.

Your data is not used for training

On Anthropic's commercial API terms, your prompts and outputs are not used to train models by default.

Data retention you control

Zero data retention is available for eligible enterprise use, and we keep our own logs minimal and masked.

Run it in your cloud

Through AWS, Google Cloud or Azure, Claude can sit inside the cloud and region you already trust.

Least-privilege tools

Each MCP tool gets only the permissions it needs, and actions that change data wait for approval.

Regulated industries

Health, finance and legal projects get redaction, audit logs and human review. See healthcare and fintech.

09What we build

Claude solutions we deliver

Each one starts from a business result: hours saved, faster answers, fewer errors.

10How we work

From first idea to production in about eight weeks

A typical path for one focused feature. Larger platforms run several in sequence.

  1. DiscoverGoals, data, risks and how we will measure success.
  2. PrototypeWorking version on your real documents, plus a first eval set.
  3. HardenTools, permissions, guardrails and cost limits.
  4. LaunchProduction rollout with monitoring and a rollback plan.
  5. ImproveMonthly reviews; new Claude models adopted when they test better.
11Claude or another model?

We build with every major model family

We are model-neutral. Claude is often the right choice for documents, coding and dependable agents; where another model fits better, we say so.

Model familyStrengthsWhen we choose it
Anthropic ClaudeLong documents, careful instruction following, coding and agentsContracts, research, coding assistants, reliable agents
OpenAIBroad APIs including realtime voice and image generationVoice agents and multimodal products
Google GeminiVery long context and Google Cloud integrationTeams on Google Workspace and Cloud
Meta LlamaOpen weights to host yourselfStrict on-premise or offline needs
DeepSeekLow-cost open reasoning modelsCost-sensitive, self-hosted reasoning
QwenOpen-weight, strong multilingual supportMultilingual products

Technologies we pair with Claude

Related services

Industries

12FAQ

Claude development questions

Straight answers to what clients ask us most.

Which Claude model should we use?

Most projects start on Claude Sonnet 5.5. We route simple, high-volume steps to Haiku 4.5 and reserve Opus 5.5 or Fable 5.1 for the hardest reasoning, choosing based on evals with your own data rather than benchmarks.

What is Claude Fable 5.1, and how does it relate to Mythos?

Mythos is Anthropic's newest tier above Opus. Claude Mythos Preview is only available to selected organisations through Project Glasswing. Claude Fable 5.1 shares the same underlying model with extra safety measures for biology, cybersecurity and AI research, and is publicly available.

Is Claude good with long documents?

Yes. Claude can read very long contracts, reports and codebases in one request and point to the exact passage behind each answer. For whole libraries of documents we add retrieval so it reads only what is relevant.

What is MCP?

The Model Context Protocol is an open standard, introduced by Anthropic, for connecting AI to tools and data. We build MCP servers for your CRM, database, files or internal APIs so Claude can use them safely, and the same servers work with other MCP-compatible apps.

Can we run Claude in our own cloud?

Yes. Claude is available through Amazon Bedrock, Google Cloud Vertex AI and Microsoft Foundry as well as Anthropic's own API, so it can run inside the cloud account, region and governance you already have.

Will Anthropic train on our data?

Under Anthropic's commercial API terms, your inputs and outputs are not used to train models by default. Zero data retention is available for eligible enterprise use cases, and we add redaction and access controls on our side.

How do you keep running costs down?

Model routing (Haiku for easy work), prompt caching for repeated context, the Message Batches API for work that can wait (billed at half price), and tight output limits. We estimate cost per request before building and set spend alerts.

Get In Touch

Ready to build with Claude?

Tell us what you want Claude to read, write, decide or do. We reply within 4 business hours with honest advice.

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Response TimeWithin 4 business hours (your timezone)
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