Claude Code, Cursor and Codex
on Claude and GPT at half the price.
One key, a monthly allowance. Code Starter gives you $100 of coding at vendor prices for $25/mo — metered per token, in the coding agent you already use.
Same models. Same API. Half the bill. Cancel anytime · 14-day refund on your first month.
Works with the agent you already use
Plans
What you pay vs. what you get
Every plan includes every model in the catalog. The plans differ in the size of the monthly allowance and the weekly fair-use allowance on premium models.
Code Starter
Evenings-and-weekends coding
billed monthly · cancel anytime
$100of coding at vendor prices
every month, as $50 of Halfbill credits
- Premium models / week
- $12 at vendor prices
- Past the allowance
- overflow to credits
- Every Claude and GPT model in the catalog
- Claude Code, Cursor, Codex CLI, Cline and any compatible tool
- Dashboard with per-request cost
14-day refund on your first month
Code Pro
Daily development work
billed monthly · cancel anytime
$240of coding at vendor prices
every month, as $120 of Halfbill credits
- Premium models / week
- $36 at vendor prices
- Past the allowance
- overflow to credits
- Everything in Code Starter
- Larger weekly premium-model allowance
- One included Reset Pass per month
14-day refund on your first month
Code Max
All-day, multi-agent sessions
billed monthly · cancel anytime
$600of coding at vendor prices
every month, as $300 of Halfbill credits
- Premium models / week
- $108 at vendor prices
- Past the allowance
- overflow to credits
- Everything in Code Pro
- Largest weekly premium-model allowance
- Two included Reset Passes per month
14-day refund on your first month
Usage is metered per token at Halfbill prices (half the vendor list price on standard models). Premium models — the frontier flagships — draw on the monthly allowance and, in addition, on a weekly fair-use allowance shown on each card. Unused allowance does not roll over. When the allowance is used up, requests pause or, if you enable overflow in the dashboard, continue from your credit balance.
14-day refund on your first month
Cancel within 14 days of your first payment and we refund it minus the allowance you used. Used less than 20%? Refund yourself in one click from Billing. No cancellation fee.
No subscription? Pay as you go
The same models are available on the Halfbill API without a plan: top up credits and pay per token at the same Halfbill prices.
Prices in USD, excluding VAT; VAT is applied at checkout for EU customers. Need company details on your invoice? Update billing settings before purchase — the invoice is emailed after payment.
Price check
- Vendor API, pay as you go
- $25 → $25 of usage
- Code Starter
- $25/mo → $100 of usage at vendor prices
Same dollars, twice the usage on standard models — in whatever editor or agent you already use. Premium flagships are included too, within the weekly fair-use allowance.
How it works
Up and running in minutes
Pick a plan
Code Starter, Code Pro or Code Max. One key for every tool — no separate keys per agent.
Point your agent at Halfbill
Set the base URL to https://api.halfbill.uk (Anthropic format) or https://api.halfbill.uk/v1 (OpenAI format) and paste your key. No SDK changes.
Use Claude and GPT freely
Every Claude and GPT model in the catalog on every plan. Switch models per task with the same key.
The catalog
Every plan ships with every model
The current Claude models from Anthropic and GPT models from OpenAI, at half the vendor list price. Streaming, tool calls, vision, structured outputs and prompt caching pass through unchanged.
Every model, on every plan
Prices per million tokens at Halfbill rates, with the vendor list price struck through.
claude-fable-5-1$7.50 in/$37.50 out/M tokens
vendor list $15 / $75
claude-fable-5$7.50 in/$37.50 out/M tokens
vendor list $15 / $75
claude-opus-5$3.75 in/$18.75 out/M tokens
vendor list $7.50 / $37.50
claude-sonnet-5$1.50 in/$7.50 out/M tokens
vendor list $3 / $15
claude-opus-4-8$3.75 in/$18.75 out/M tokens
vendor list $7.50 / $37.50
claude-opus-4-7$3.75 in/$18.75 out/M tokens
vendor list $7.50 / $37.50
claude-opus-4-6$3.75 in/$18.75 out/M tokens
vendor list $7.50 / $37.50
claude-sonnet-4-6$2.25 in/$11.25 out/M tokens
vendor list $4.50 / $22.50
claude-haiku-4-5$0.75 in/$3.75 out/M tokens
vendor list $1.50 / $7.50
gpt-6-astra$5 in/$25 out/M tokens
vendor list $10 / $50
gpt-5.6-sol$2.50 in/$15 out/M tokens
vendor list $5 / $30
gpt-5.6-terra$1 in/$6 out/M tokens
vendor list $2 / $12
gpt-5.5$1 in/$8 out/M tokens
vendor list $2 / $16
How can it be cheaper?
We buy inference capacity at volume and run a lean, focused platform.
No sales team, no free tier, no marketing budget — the savings go into the price. Halfbill is an independent service and is not affiliated with, endorsed by, or sponsored by OpenAI or Anthropic. Model names are trademarks of their respective owners.
FAQ
Common questions
Allowances, fair use, refunds and what works with Halfbill Code.
Can't find an answer? support@halfbill.uk
Every plan includes a monthly allowance:
- Code Starter — $25/mo: $100 of coding at vendor prices ($50 of Halfbill credits)
- Code Pro — $60/mo: $240 of coding at vendor prices ($120 of Halfbill credits)
- Code Max — $150/mo: $600 of coding at vendor prices ($300 of Halfbill credits)
Usage is metered per token at Halfbill prices — half the vendor list price on standard models — so the allowance goes twice as far as the same dollars spent directly with the vendor.
Half the bill. Same models.
Pick a plan, change the base URL, get back to building.
Cancel anytime · no cancellation fee · 14-day refund on your first month