Pricing

Model generation uses the gateway catalogue rates. Verification is charged only when explicitly enabled; the Model Select fee only when Gallery or a direct /v1/modelSelect call picks the model.

Your balance

Billing is prepaid. You add credit up front and each request debits your balance. There is no subscription and no invoice at the end of the month.

• Your balance is in dollars. A $25 payment adds $25 of API credit. There is no separate credit currency and no exchange rate to work out.
• Top-ups run between $5.00 and $500.00 per transaction, paid by card through Stripe. We never see or store your card details.
• Cost is settled after each response, from the token counts the model reports.
• Credit does not expire and is not transferable. Unused credit is refundable on request. See the Terms.

When your balance reaches zero, requests are refused with a 402. Nothing is charged automatically.

Model tokens

The gateway bills its published model rates, based on provider pricing. Provider updates and discounts may not be reflected until the catalogue is refreshed; use the gateway rate card to calculate your Telluvian charge.

Dollars per million tokens, for the models most people start with. Read live from the gateway catalogue, with website caching. Rates can lag a recent update. See all models for the full catalogue.

All models (182) →

Gallery and Model Select

Model Select costs $0.05 per 1M input tokens, on both Gallery requests and direct /v1/modelSelect calls. It applies to the whole prompt, cached tokens included, because Model Select reads every token whatever the provider later serves from its cache. It is never scaled by a long-context tier.

Gallery completions also incur the selected model's generation charges. Direct Model Select calls generate no completion, so the fee is the whole charge. Naming a model yourself skips Model Select and is not charged the fee.

Verification

Verification costs $1.00 per 1M completion tokens, on top of the model's pass-through rate.

Enable it with include_scores: true. Omitted or false means no verification surcharge on a normal completion. Analyze requests also require explicit opt-in.

Calculating a charge

Generation depends on the selected model, input and visible output tokens, reasoning tokens, cache reads/writes, and any long-context tier. Use the current catalogue rates rather than a fixed price table copied into application code.

Verification adds $0.30 for 300,000 completion tokens when enabled, regardless of prompt length. It adds nothing when disabled. Routing adds $0.01 for a 200,000-token prompt when we pick the model, and nothing when you name one yourself.

Usage may be estimated if a stream ends before the provider reports its final counts; stored usage records distinguish estimates from reported counts.

Your own provider keys

Requests served by your own provider key are billed for our fees only: verification and Model Select, when they apply. The provider bills you for the tokens directly, so model tokens cost nothing here. If your key fails and you have turned on fallback, the request runs on our key at the normal price.

Reasoning tokens

Some models spend part of their budget on internal reasoning that never appears in the output. OpenAI's gpt-5 family most notably, which can consume a whole budget and return no visible text at all.

These are reported separately as usage.reasoning_tokens and billed at the model's standard output rate, passed through with no markup, exactly like every other token.

They are not included in completion_tokens or total_tokens, so a response's token counts will not sum to what you were billed for on a reasoning model. Read reasoning_tokens explicitly if you are reconciling spend. It is 0 for every non-reasoning model.