// gpt
GPT-5.5
The previous OpenAI flagship. Deep reasoning, top-tier price.
Previous generation
GPT-5.5 still runs on llmrelay at the rates below, and we keep selling it — pinned versions matter when you have output you do not want to re-validate. For new work, GPT-5.6 Sol is the current pick at $2.5/M input.
Official list
llmrelay
Input / M tokens
$5.00
$2.50
Output / M tokens
$30.00
$15.00
Context window
—
1,050,000 tokens
Max output
—
128,000 tokens
What it costs you per month
Real-world budget scenarios. Numbers are simple sums — official list price vs llmrelay's 50% off tier.
Usage scenario
Official
llmrelay
Light coding (1M in / 200K out per month)
$11.00
$5.50save $5.50
Heavy Cursor / Cline user (50M in / 5M out per month)
$400.00
$200.00save $200.00
Production RAG (500M in / 20M out per month)
$3100.00
$1550.00save $1550.00
What it's good at
- +Reasoning depth
- +Mature function-calling ecosystem
- +Wide tool support
Best for
- — OpenAI-native agents
- — Complex planning
- — Structured output
Try GPT-5.5 at half the price
Free to create an account, no subscription, $10 minimum top-up — enough to run this model against a real task and judge quality yourself.
Get API key →