AI cost infrastructure

Stop overpaying for AI.

MainStreet AI saves you time and money by finding the best model for every task and optimizing the workflows around it. Same output. Fraction of the spend.

59%
Avg. token reduction
10×
Cheapest-to-frontier spread
$0.0045
Cheapest capable task
0
Code changes needed

Most tasks don't need your most expensive model

Real routing decisions from our advisor — including one that genuinely needs the frontier.

extraction
Extract line items and totals from scanned PDF invoices
Route to
Haiku 4.5
$0.0045
per call
Frontier default
Fable 5
$0.0450
per call

Pulling line items and totals from invoices is a bounded, structured extraction task with a well-defined output schema — Haiku 4.5 handles OCR'd text parsing and field mapping reliably at the lowest cost and fastest latency.

$0 saved per 100k calls · 10× cheaper
Free account

Those were our prompts.
Run it on yours.

The examples above are real output from the same engine. Sign up and point it at your own prompts and workloads — no card, no sales call.

  • Run the optimizer on your own prompts, unlimited
  • Model routing for your actual task mix
  • Cost projection at your call volume
  • Before/after quality comparison

No card required. We don’t share your address.

Not every task needs your most expensive model

A 1200× cost spread separates Qwen 3.7 Flash from GPT-5.5 pro for identical work — 50 models across 12 providers, all from published rate cards. Knowing which task belongs where is the whole job.

2k in / 500 out
Qwen 3.7 Flash
Alibaba
$0.0001
Nova Micro
Amazon
$0.0001
Command R7B
Cohere
$0.0001
GPT-5 nano
OpenAI
$0.0003
GLM 4.7 Flash
Z.ai
$0.0003
Ministral 3 8B
Mistral
$0.0004
Gemini 2.5 Flash-Lite
Google
$0.0004
DeepSeek V4-Flash
DeepSeek
$0.0004
Mistral Small 4
Mistral
$0.0006
Command R
Cohere
$0.0006
Qwen3 Coder Next
Alibaba
$0.0006
MiniMax M2.5
MiniMax
$0.0008
Qwen 3.6 Flash
Alibaba
$0.0009
MiniMax M2.7
MiniMax
$0.0010
MiniMax M3
MiniMax
$0.0012
Gemini 3.1 Flash-Lite
Google
$0.0013
Qwen 3.7 Plus
Alibaba
$0.0013
DeepSeek V4-Pro
DeepSeek
$0.0013
GPT-5 mini
OpenAI
$0.0015
Qwen 3.6 27B
Alibaba
$0.0016
Mistral Large 3
Mistral
$0.0018
Devstral 2
Mistral
$0.0018
Nova 2 Lite
Amazon
$0.0019
Gemini 3.5 Flash-Lite
Google
$0.0019
GLM 5.2
Z.ai
$0.0025
Kimi K2.5
Moonshot AI
$0.0026
Kimi K2.6
Moonshot AI
$0.0027
GLM 5
Z.ai
$0.0032
Nova Pro
Amazon
$0.0032
Kimi K2.7 Code
Moonshot AI
$0.0032
GLM 5.1
Z.ai
$0.0034
Grok 4.3
xAI
$0.0037
Grok 4.20
xAI
$0.0037
Haiku 4.5
Anthropic
$0.0045
GPT-5.6 luna
OpenAI
$0.0050
Qwen 3.7 Max
Alibaba
$0.0052
Mistral Medium 3.5
Mistral
$0.0067
Gemini 3.6 Flash
Google
$0.0067
Grok 4.5
xAI
$0.0070
Sonnet 5
Anthropic
$0.0090
Gemini 3.1 Pro
Google
$0.0100
Command A
Cohere
$0.0100
Command R+
Cohere
$0.0100
Nova Premier
Amazon
$0.0112
GPT-5.6 terra
OpenAI
$0.0125
Kimi K3
Moonshot AI
$0.0135
Opus 5
Anthropic
$0.0225
GPT-5.6 sol
OpenAI
$0.0250
Fable 5
Anthropic
$0.0450
GPT-5.5 pro
OpenAI
$0.1500
50 models · 12 providers · published rate cardsverified 24d ago
Price your own volumeFull table, every provider, priced against your traffic.

How it works

Four steps, no rewrite of your stack. Most teams see savings inside a week.

01

Measure

We instrument your LLM calls and establish a real cost and quality baseline — no guesswork, no code change.

02

Compress

Prompts get stripped of redundancy and restructured. Intent preserved, tokens cut, output unchanged.

03

Route

Each request goes to the cheapest model that clears your quality bar, benchmarked across providers.

04

Verify

Continuous evals catch regressions before your users do. Savings you can show a CFO.

Service packages

Start with an audit to see the number. Move to a retainer when you want us keeping it down.

Audit

Find out what you're overpaying for.

$2,500one-time
  • Full audit of your LLM spend and traffic
  • Prompt-level cost breakdown by workflow
  • Model-fit analysis against your quality bar
  • Written savings roadmap with projected ROI
  • 90-minute findings walkthrough
Book an audit
Most popular

Optimize

We cut the bill and prove it held.

$6,000/ month
  • Everything in Audit, run continuously
  • Prompt compression across your workloads
  • Model routing tuned per task type
  • Quality regression testing on every change
  • Monthly savings report
  • Slack access to your engineer
Start optimizing

Managed

We run your AI cost infrastructure.

Customannual contract
  • Everything in Optimize
  • Dedicated gateway deployed in your VPC
  • Custom evals built for your domain
  • Multi-provider failover and rate-limit handling
  • SLA with guaranteed savings floor
  • Quarterly business review
Talk to us

Find out what you’re overpaying.

Tell us what you’re running and we’ll tell you what it should have cost. No commitment.

Goes straight to a human. No autoresponders.