Put AI to work on real problems, not demos
We scope where models add value, then build and measure it on your data. Below: the monthly bill at Anthropic's published list prices, and when we would tell you to spend elsewhere.
Tell us what you want it to do
One reply within one business day. If it is the wrong build, we say so.
What should you ask before you hire anyone?
1
A real problem, or another demo?
A demo runs on cases someone picked. Ask which of your cases it was tried on, and what it got wrong.
- Why 2 waits for 1Nothing you spend on the next question matters until the problem is worth solving this way.
2
Build cost, and the monthly bill after launch?
The build price is the number every firm will discuss. Models bill per use, so the running cost never stops and almost nobody has it ready.
- Why 3 waits for 2You cannot judge either number without knowing what the thing must achieve for you.
3
How will we know it is working?
Not a dashboard. Your own cases, a score on them, and a number below which the feature is switched off.
- Why 4 waits for 3Measurement is meaningless if the data cannot legally go to where the model runs.
4
Does our data train someone else’s model?
Where it goes, and who may train on it, sits in the providers’ contracts. A badge on a website is not the answer.
- Why 5 waits for 4All of it is temporary if you cannot run the thing without us afterwards.
5
What happens when you leave?
Ask now for the list of artifacts you would keep, in your own accounts, on the day the engagement ends.
All five are answered below, in roughly this order. The order is ours rather than yours, so if yours is different, that is worth saying on the first call.
How often does AI get things wrong?
There is no honest general answer, and anyone who gives you one is quoting a leaderboard. The one place shipped, paid products were independently audited is US legal research. A hallucination is an answer the model states confidently and cannot support. The queries were preregistered, written down before any system was run, and the one general model in the set had no retrieval layer, the step that fetches the real source documents and hands them to the model before it answers. The best performer here still got one query in three wrong or incomplete. Two systems miss at the same 17 percent and are nothing like each other, so ask any vendor quoting you a percentage which task it was measured on, by whom, and against what answer key.
Show data table
| Dimension | Accurate | Incomplete | Hallucinated |
|---|---|---|---|
| Lexis+ AI | 65% | 18% | 17% |
| Westlaw AI-Assisted Research | 42% | 25% | 33% |
| Ask Practical Law AI | 20% | 63% | 17% |
| GPT-4, no retrieval layer | 49% | 8% | 43% |
Lexis+ AI and Ask Practical Law AI hallucinated at the same rate, and one was accurate on 65 percent of queries while the other was accurate on 20 percent and incomplete on 63.
When we would tell you no
Worth building
The work is judgement over messy text, and a person can tell a good answer from a bad one in seconds.
You have real examples of the task done well to measure against.
A wrong answer gets caught before it reaches anyone outside.
Volume makes it worth automating.
Spend the money elsewhere
If you can state the logic in a paragraph, write the rule: cheaper, faster, and the same answer every time.
the same software engineering practice we run on every engagement
A wrong answer is unrecoverable and nobody sees it first, where money moves, medicine is dosed or contracts are signed.
the same software engineering practice we run on every engagement
Nobody on your side can tell a good output from a bad one yet, so no build can be scored.
Nothing is built yet and the AI part belongs to a product that does not exist.
The product already runs, and the model is one more feature inside a system you already own.
What will it cost to run every month?
Models bill by the token, roughly three quarters of a word, and every call to the model, which the industry calls inference, is charged for what goes in and what comes out. So hold one workload still and price it six ways. The spread is exactly five times, and none of it is optimisation, only a choice of tier. Prompt caching stores the unchanging front of your request. The Batch API returns results within a day rather than a second.
Show data table
| Item | Monthly inference cost for one fixed workload at published list prices |
|---|---|
| Claude Opus 5 | 2,750$ per month |
| Claude Sonnet 5 | 1,100$ per month |
| Claude Haiku 4.5 | 550$ per month |
| Sonnet 5 with prompt caching | 691$ per month |
| Sonnet 5 via the Batch API | 550$ per month |
| Sonnet 5 after a tokenizer change | 1,430$ per month |
Running a mid-tier model through the batch queue costs the same as running the small model live.
Three things move that bill. First, the tier: the swing between the top and small model of one provider. Second, prompt caching: a stable prefix is the part of a request that never changes between calls, and on a 75 percent stable prefix the real saving is smaller than the 90 percent headline rate implies, because the first write into the cache and everything the model writes back are billed at the full undiscounted rate. Third, the one you do not control: a tokenizer is what splits your text into tokens, and a change to it bills about 30 percent more tokens for the same text.
Derived from list prices. Anthropic pricing, fetched 2026-08-29
Derived on the workload above. Anthropic pricing, fetched 2026-08-29
Provider own statement. Anthropic pricing, fetched 2026-08-29
The measurement
How will you know it is working?
Before any code
The evaluation set is your cases, not ours
An eval is a fixed set of real inputs with the answers you would accept, scored automatically whenever anything changes. Yours is built from tickets, documents or transcripts you already have. A case the team cannot agree on is itself a finding.
Before any code We size the first set at 150 to 300 cases, each with an accepted answer and why.
Before any code
The pass bar and stop number, in writing
One score to clear before launch, and one below which the feature is switched off. Both are written down before we build, along with the test set and the metric each is measured on.
Before any code NIST AI Risk Management Framework, the US standards agency’s guidance. MEASURE 2.1 and 2.3: test sets and metrics documented, criteria demonstrated under conditions like deployment.
During the build
We measure what a reviewer cannot see
A person checking output catches confident nonsense. They do not catch the answer the model failed to give, the record it skipped, the flag it did not raise. Those misses are the more damaging kind and the ones a score has to count.
During the build Separate scores for wrong answers given and correct answers missed.
After launch
The same score runs on live traffic, scheduled
Models drift: the same input produces different output as the provider updates the model. A score taken once before launch says nothing about the week after, so the same set runs again on schedule.
After launch NIST AI RMF MEASURE 2.4 and 2.6: behaviour monitored in deployment, residual risk inside tolerance.
After launch
Every reported bad answer becomes an eval case
A complaint is only useful if it changes the score. Every bad answer a user reports enters the evaluation set that week. The same failure is then measured on every run rather than remembered.
After launch NIST AI RMF MEASURE 3.3: users can report problems, fed into the metrics.
Did the EU AI Act deadlines move?
Yes, in July 2026, and the source most people read has not caught up. As of 29 August 2026 the tracker at artificialintelligenceact.eu is stamped Last updated: 1 August 2024 and still shows the old sequence. What governs is the consolidated text on EUR-Lex, CELEX:02024R1689-20260727, where Article 113 carries the amendments made by Regulation (EU) 2026/1744.
- 1 August 2024
The Act enters into force
Regulation (EU) 2024/1689 enters into force, with its obligations arriving on the later dates below.
- 2 February 2025
Prohibited practices and AI literacy apply
Chapters I and II, which carry the prohibited practices and the AI literacy duty.
- 2 August 2025
General-purpose model obligations apply
Chapter V, which carries the general-purpose model obligations, plus the governance and penalty provisions.
- 27 July 2026
Regulation (EU) 2026/1744 amends the sequence
It replaces Article 113(3) points (a) and (c) and adds a new point (d).
- 2 August 2026
The Regulation applies generally
Article 113 first paragraph, the general date of application for the rest of the Regulation.
- 2 August 2026
Transparency duties apply
Article 50: people are told when they are dealing with a machine rather than a person.
- 2 December 2027
High-risk rules apply to Annex III systems
Chapter III Sections 1 to 3. The 2024 text said 2 August 2026.
- 2 August 2028
High-risk rules apply to Annex I systems
Safety components regulated under existing product law. The 2024 text said 2 August 2027.
- Throughout
These are dates of application
Article 113 sets when the Regulation starts to apply, not a deadline for one organisation.
Are you the provider or the deployer?
The words mean close to the opposite of what they sound like. A provider develops the system, or has it developed, and puts it on the market under its own name or trademark, Article 3(3). A deployer uses it under their own authority in the course of their work, Article 3(4). Buy a high-risk system and run it in your business and you are the deployer. Conformity assessment, CE marking, the EU declaration of conformity, a quality management system and technical documentation all sit in Article 16, on the provider: five duties the deployer does not carry. Article 26 contains none of them. Article 25(1) states the three ways a deployer becomes a provider: putting your own name or trademark on a high-risk system already on the market, making a substantial modification, or changing a system purpose so it becomes high-risk.
- Use the system the way its instructions say, Article 26(1).
- Put a competent person in charge of it, with authority to stop it, Article 26(2).
- Keep the input data relevant, where you control it, Article 26(4).
- Report a serious problem to the provider and the authority, Article 26(5).
- Keep the logs for at least six months, Article 26(6).
- Tell workers, and their representatives, before using it on them at work, Article 26(7).
Where does your data go, and does it train someone else’s model?
None of the four trains on your data by default. Google states it as a permission condition, and the AWS answer sits in a support FAQ rather than in clause text. Your lawyer or your largest customer will put that in writing, so the training answer below is quoted from each provider's own published wording, with the clause named where it is clause text. Zero data retention means the provider keeps no copy of the request after answering it, and at all four it must be applied for. A data processing agreement, or DPA, makes the provider your processor under data protection law. The prompts, the evaluation set, any fine-tuned weights and the data are yours. Consumer tiers are a different contract and frequently do train by default. Microsoft Azure OpenAI Service is absent because we have not read its terms. The providers we build on are listed at /about/tech-stack/.
| Provider | Trained on by default | Who owns inputs and outputs | Retention | Zero data retention | Data processing agreement |
|---|---|---|---|---|---|
| OpenAI API | Trained on by default“OpenAI will not use Customer Content to develop or improve the Services, unless Customer explicitly agrees to such use.” Business Terms 4.2. | Who owns inputs and outputsAssigns output to the customer. | RetentionUp to 30 days for abuse monitoring, then deleted. | Zero data retentionBy approval, per endpoint. | Data processing agreementYes, by reference. |
| Anthropic API | Trained on by default“Anthropic may not train models on Customer Content from Services.” Commercial Terms, section B. | Who owns inputs and outputsAssigns output to the customer. | RetentionHeld a limited period for trust and safety. | Zero data retentionBy approval. | Data processing agreementYes, by reference. |
| Google Cloud, Vertex AI and Gemini Enterprise | Trained on by default“Google will not use Customer Data to train or fine-tune any AI/ML models without Customer’s prior permission or instruction.” Service Specific Terms, section 18. | Who owns inputs and outputsDisclaims ownership rather than assigning output. | RetentionCaching and abuse logging, commonly up to 30 days. | Zero data retentionBy approval. | Data processing agreementYes, the Cloud addendum. |
| AWS, Amazon Bedrock | Trained on by defaultFAQ, not clause text: “AWS and the third-party model providers will not use any inputs to or outputs from Amazon Bedrock to train Amazon Nova, Amazon Titan, or any third-party models.” | Who owns inputs and outputsStates that AWS obtains no rights. | RetentionNot stored for model improvement. | Zero data retentionBy approval. | Data processing agreementYes, the AWS addendum. |
The terms quoted above: OpenAI Business Terms, Anthropic Commercial Terms, Google Service Specific Terms, the Amazon Bedrock FAQ.
What happens when it is wrong?
It gives a customer a wrong answer, confidently.
OWASP, the security standards body, lists this as LLM09 Misinformation. It is false or misleading output that appears credible, and OWASP names reputational damage and legal liability as consequences.
What we commit to
The wrong-answer path is written down before launch. It names what the user sees, who is told, and how the case enters the evaluation set that week.
Somebody hides an instruction inside a document and the model obeys it.
OWASP LLM01 Prompt Injection and LLM05 Improper Output Handling. A guardrail is a check that runs around the model, not a promise about it.
What we commit to
Untrusted text is never handled as instructions. Tool access is allowlisted, output is escaped, and you see the tests rather than a claim about them.
It reveals something from another customer.
OWASP LLM02 Sensitive Information Disclosure. What leaks is personal data, financial details, health records or security credentials.
What we commit to
Retrieval, where the model is handed documents to read, is filtered by the permissions your application already enforces. Nobody can see through the model what they could not already see in the product.
It is given the ability to act, and acts too freely.
OWASP LLM06 Excessive Agency. Agency is the ability to call functions and other systems, and the damage scales with that list.
What we commit to
Actions are enumerated, scoped to the minimum, and anything irreversible stops for a person. An agent, a model that calls tools in a loop, gets a written list of what it may call.
The bill runs away in a bad week.
OWASP LLM10 Unbounded Consumption. Every call to the model is billed, so nothing but a ceiling stops a runaway loop.
What we commit to
A per-request cost ceiling and a monthly cap, with an alert that fires before either one is reached. One bounds a single bad request, the other bounds a bad month.
We stop working together and you cannot run it.
If the AI feature is the slow part rather than the wrong part, that is performance work rather than this engagement.
What we commit to
Code and infrastructure, prompts, the evaluation suite, the runbook and the cost dashboard live in your own accounts throughout. Nothing has to be handed over at the end.
Tell us what you want it to do
Two outcomes, both useful: a scoping conversation with a senior software engineer, or a clear no from us with the reason.