Metering

Pay for tokens, not plans.

Buy credits in advance and pay per token. One credit is one US dollar. There are no subscriptions, seats or minimum commitments.

Per-token prices

Each request costs its input, cached-input and output tokens at the model's posted price, rounded up to the next $0.000000001. A few models charge more for very long prompts; the models page lists those prices.

Reserved, then settled

While a request runs, its largest possible cost is reserved from your balance. When it finishes you are charged for the tokens it actually used and the rest is released.

Failures are free

Requests that fail before producing output cost nothing. If a stream breaks midway, you pay for the input and the output delivered so far, nothing more.

Prices

Model prices

US dollars per million tokens. Full catalog and reference sources

Model prices per million tokens
Model	Context	Input / 1M	Output / 1M	Saving
Claude Fable 5.1 claude-fable-5-1 · Anthropic	1M	$10.00$6.00	$50.00$30.00	−40%
Claude Opus 5 claude-opus-5 · Anthropic	1M	$5.00$3.00	$25.00$15.00	−40%
Claude Sonnet 5 claude-sonnet-5 · Anthropic	1M	$2.00$1.20	$10.00$6.00	−40%
GPT-6 Astra gpt-6-astra · OpenAI Prompts over 272,000 tokens: the whole request at $12.00 input and $45.00 output per 1M.	1.05M	$10.00$6.00	$50.00$30.00	−40%
GPT-4.1 mini gpt-4.1-mini · OpenAI	1.05M	$0.40$0.24	$1.60$0.96	−40%
GPT-4o mini gpt-4o-mini · OpenAI	128K	$0.15$0.09	$0.60$0.36	−40%
Gemini 3.8 Flash gemini-3.8-flash · Google Listed at this price until Jan 1, 2027, 12:00 AM UTC, when the provider's price changes.	1.05M	$0.75$0.45	$3.75$2.25	−40%
Grok 4.6 grok-4.6 · xAI Prompts of 200,000 tokens or more: the whole request at $2.40 input, $0.60 cached input and $7.20 output per 1M.	500K	$2.00$1.20	$6.00$3.60	−40%
DeepSeek V4 ProOpen weights deepseek-v4-pro · DeepSeek	1M	$1.32$0.792	$3.96$2.376	−40%

Estimate

Estimate your monthly bill

Same arithmetic as billing, at today's prices.

Model

Input tokens / month (M)

Output tokens / month (M)

Cached-input discounts are left out, so real costs can be lower on models that offer them. Base prices are used: on models that charge more for very long prompts, those requests cost more.

Reference price: $1,000.00
Avenro: $600.00
You save: $400.00

Payment

Paying for credits

USDG or USDC on Robinhood Chain: From $1, at $1 of credit per token, with no fee from us (you pay the network's gas in ETH). Up to $500 of deposits is credited as soon as the transaction confirms; beyond that, at the first deposit check after the block is posted to Ethereum, within about 40 minutes.
High volume: Planning sustained, large workloads or dedicated capacity? Contact @avenrotech on X.