Ship agents that fix themselves.

Kalibr keeps your agents running in production by routing around model failures, tool breakage, and cost spikes autonomously.

Get Started Star on GitHub
$ pip install kalibr
OpenAI OpenAI
Anthropic Anthropic
Google Google
LangChain LangChain
CrewAI CrewAI
OpenAI Agents SDK OpenAI Agents SDK

Open source SDK. Hosted routing intelligence.

Routing

See Routing in Action

Agents / research_agent Stable
Live
Success Rate
91%+3%
vs last 24h
Total Executions
1,893
all time
Active Paths
3
of 3 enabled
Mode
Exploitation
high confidence
Paths
Rank Path Success Samples Traffic Trend
1 claude-sonnet-4 + serper 94.1% 847
42%
+ 3%
2 gpt-4o + tavily 88.2% 634
32%
- 0%
3 gpt-4o-mini + tavily 85.7% 412
26%
- 4%
Process

How It Works

Kalibr makes routing decisions automatically. No manual approval required.

Multiple execution paths

You define primary and fallback paths for each goal. Model, tool, and config combinations you're okay using.

OpenAI, Anthropic, Google Any tool or API Custom parameters

Outcomes are tracked

You define what success means for each goal. Kalibr evaluates automatically after every run.

Programmatic evaluation Optional quality scores Automatic cost tracking

Execution adapts automatically

Most traffic goes to the primary path. Some goes to fallbacks. When the primary degrades, traffic shifts.

Continuous testing Outcome-aware failover No deploys required
Observability

Tracing Included

Detailed observability into each step of your agent workflows.

Per-call telemetry

Model used Latency Token count Cost

Execution graphs

Full trace trees Agent-to-agent handoffs Tool calls

Aggregates

Success rates by goal Cost by agent Latency trends
Paths
1 claude-sonnet-4 + serper 94.1% 847
42%
+ 3% ∧
Recent Executions
Success
$0.0032 1.41s 534 tokens
just now
Model
claude-sonnet-4 + serper
Provider
anthropic
Duration
1292ms
Cost
$0.0032
Input Tokens
432
Output Tokens
102
Span ID
595616e4c7b34011
Trace ID
ec28ea45b36b4c09
Execution Trace
LLM anthropic.messages.create
200 OK
LATENCY 1292ms TOKENS 534 COST $0.0032 TEMPERATURE 0.7
Total:$0.0032 Tokens:534 Duration:1412ms
Success
Plans

Pricing

Start free. Scale as you grow.

Free

$0/month
100 routing/mo · 1,000 traces/mo
90-day retention
10 API requests/second
  • Full routing intelligence
  • Full tracing & observability
  • Dashboard access
Get started
Popular

Starter

$29/month
1,000 routing/mo · 10,000 traces/mo
1-year retention
100 API requests/second
  • Everything in Free
  • Email support
Get started

Pro

$149/month
10,000 routing/mo · 100,000 traces/mo
Unlimited retention
500 API requests/second
  • Everything in Starter
  • Priority support
Get started

Enterprise

Custom
Unlimited routing · Unlimited traces/mo
Unlimited retention
Custom rate limits
  • Everything in Pro
  • Dedicated support
  • SLA guarantee
Contact sales

Request trial credits to test Kalibr with your production workloads.

Request trial credits

Keep your agents running.

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