LLM Observability & Tracing Platforms in AI answers

Data as of Oct 21, 2026Based on 674 AI responsesReviewed by Dimitry Apollonsky

AI summary

Langfuse holds a clear lead across LLM observability and tracing, widely recommended for cost tracking, logging, and open-source self-hosting. For agent debugging and root cause analysis, LangSmith serves as the usual answer.

What’s changing · since July

Since July, Langfuserising has become the most named option for LLM audit logging, while Arize Phoenixrising is now among the three most named for agent root cause analysis. Heliconefalling and Datadogfalling are named less often across latency tracing and audit trails.

Most-mentioned brands

Rank and Mentioned in · since Jul 5

#	Brand	Recommended for	Mentioned in
1	Langfuse 75% open-source tracing, request logging, and granular token cost tracking	open-source tracing, request logging, and granular token cost tracking	75%
2	LangSmithLangChain product line 60% debugging agent failures, audit trails, and LangChain ecosystem tracing	debugging agent failures, audit trails, and LangChain ecosystem tracing	60%
3	Arize PhoenixArize AI product line 54% OpenTelemetry-native tracing, RAG evaluation spans, and local-first privacy	OpenTelemetry-native tracing, RAG evaluation spans, and local-first privacy	54%
4	Braintrust 38% eval-centric workflows, regression testing, and tying costs to performance	eval-centric workflows, regression testing, and tying costs to performance	38%
5	Helicone 28% proxy-based request logging and fast plug-and-play cost monitoring	proxy-based request logging and fast plug-and-play cost monitoring	28%
6	OpenTelemetry 23% vendor-neutral trace instrumentation and agent action logging pipelines	vendor-neutral trace instrumentation and agent action logging pipelines	23%
6	LangChain LangGraphLangChain product line 21% visual tracing and debugging of multi-agent state machines	visual tracing and debugging of multi-agent state machines	21%
8	Datadog 17% enterprise teams integrating LLM traces with existing infrastructure monitoring	enterprise teams integrating LLM traces with existing infrastructure monitoring	17%
8	Grafana 16% custom real-time dashboards monitoring token burn rate across applications	custom real-time dashboards monitoring token burn rate across applications	16%
8	LangChain 15% native execution tracing for applications built on its framework	native execution tracing for applications built on its framework	15%
8	Datadog LLM ObservabilityDatadog product line 14%		14%
12	LiteLLM 13%		13%
12	Portkey AI 12%		12%
12	Prometheus 12%		12%
12	Arize AI 10%		10%
16	OpenAI 10%		10%
16	Grafana OSSGrafana product line 9%		9%
16	Anthropic 8%		8%
19	ClickHouse 7%		7%
19	Weights & Biases WeaveWeights & Biases product line 6%		6%
21	GeminiAlphabet product line 5%		5%
21	Comet OpikComet product line 5%		5%
21	Galileo AI · galileo.ai 4%		4%
21	MLflow 4%		4%
25	SigNoz 3%		3%
25	PostgreSQL 3%		3%
25	LookerAlphabet product line 3%		3%
25	CodeBurn 3%		3%
25	ClaudeOwned by Anthropic 3%		3%
25	Traceloop 3%		3%
25	GPT-4oOpenAI product line 3%		3%
25	n8n 3%		3%
25	Google Cloud BigQueryAlphabet product line 3%		3%
25	SplunkOwned by Cisco 2%		2%
25	Comet 2%		2%
25	Metabase 2%		2%
37	TimescaleTiger Data product line 2%		2%
37	Retool 2%		2%
37	PagerDuty 2%		2%
37	Apache KafkaApache Software Foundation product line 2%		2%
37	Snowflake 2%		2%
37	Microsoft Power BIMicrosoft product line 2%		2%
37	OpenLIT 2%		2%
37	AgentOps 2%		2%
37	ccusage 2%		2%
37	New Relic 2%		2%
37	Slack · salesforce.comSalesforce product line 2%		2%
37	Pydantic LogfirePydantic product line 1%		1%
37	OpenObserve 1%		1%
37	Galileo AI 1%		1%
37	Amazon BedrockAmazon product line 1%		1%
37	Jaeger 1%		1%
37	Apache SupersetApache Software Foundation product line 1%		1%
37	Bifrost by Maxim AI 1%		1%
37	OpenUsage 1%		1%
37	Fiddler AI 1%		1%
37	Datadog Agent ObservabilityDatadog product line 1%		1%
58	GPT-5 1%		1%
58	vLLM 1%		1%
58	OpenInference 1%		1%
58	LlamaIndex 1%		1%
58	Torii 1%		1%
58	OpenAI Agents SDKOpenAI product line 1%		1%
58	Maxim AI 1%		1%
58	Microsoft AzureMicrosoft product line 1%		1%
58	React 1%		1%
58	Next.jsVercel product line 1%		1%
58	Power BI 1%		1%
58	Slack · slack.comOwned by Salesforce 1%		1%
58	Openlayer 1%		1%
58	Weights & Biases 1%		1%
58	PromptLayer 1%		1%
58	TokenLens 1%		1%
58	Elastic 1%		1%
58	BurnRate 1%		1%
58	Vercel AI SDK 1%		1%
58	Jellyfish 1%		1%
58	AgentDbg 1%		1%
58	Fazm 1%		1%
58	Collibra 1%		1%
58	Confident AI 1%		1%
58	Laminar 1%		1%
58	toktap 1%		1%
58	Claude Code ActionAnthropic product line 1%		1%
58	Elastic SecurityElastic product line 1%		1%
58	Meta AI 1%		1%
58	Google Cloud Pub/SubAlphabet product line 1%		1%
58	AWSAmazon product line 1%		1%
58	Honeycomb 1%		1%
58	GPT-4.1 <1%		<1%
58	TraceAgent <1%		<1%
58	Virtana <1%		<1%
58	Microsoft Purview Records ManagementMicrosoft product line <1%		<1%
58	Agent PrismEvil Martians product line <1%		<1%
58	IBM <1%		<1%
58	Google CloudAlphabet product line <1%		<1%
58	Google Cloud PlatformAlphabet product line <1%		<1%
58	Azure OpenAI ServiceMicrosoft product line <1%		<1%
58	TrueFoundry <1%		<1%
58	Azure MonitorMicrosoft product line <1%		<1%

Who leads each AI engine

ChatGPT SearchChatGPT Search: Langfuse
Google AI ModeGoogle AI Mode: Langfuse

Mentioned in on each engineChatGPT SearchGoogle AI Mode

Widest split: OpenTelemetry, 35% on ChatGPT Search and 12% on Google AI Mode.

Mentioned in on each AI engine, by brand
Brand	ChatGPT Search	Google AI Mode
Langfuse	72%	79%
LangSmith	61%	59%
Arize Phoenix	53%	54%
Braintrust	36%	40%
Helicone	29%	26%
OpenTelemetry	35%	12%
LangChain LangGraph	24%	17%
LangChain	20%	11%
Datadog LLM Observability	11%	18%
Grafana	19%	13%

Latest insights

Weeks of Sep 28 – Oct 11, 2026 · Since Jul 5

Langfuse Gap between platforms: Langfuse's platform gap in LLM Observability & Tracing Platforms narrowed: Google AI Mode 78.1%, ChatGPT Search 69%
LangSmith Gaining: LangSmithHelicone now trails LangSmith in LLM Observability & Tracing Platforms
LangSmith Gaining: LangSmith now ranks #4 in LLM Observability & Tracing Platforms, up from #7
LangSmith Gaining: AI mentioned LangSmith in 33.7% of LLM Observability & Tracing Platforms answers, up from 17.5%
Helicone Slipping: HeliconeLangSmith moved ahead of Helicone in LLM Observability & Tracing Platforms

and 7 more insightssee the ranking

Market map

Mentioned in · since Jul 5

Leading brands by topic

LLM observability and tracingLed byLangfuse

Questions by topic1

LLM cost monitoring software
- I need a dashboard to monitor "token burn rate" across all my internal AI apps.
- We need a way to visualize token burn rates across our internal AI applications. What software handles this?
- We need a way to visualize the token burn rate for all our internal AI applications. What dashboard tools do you recommend?

We need to create an audit trail for our LLM's decision-making process. What's the best observability tool for capturing a model's chain of thought?
My goal is to analyze the latency of each part of our LLM chain. What's the best tracing tool with support for detailed LLM and embedding spans?
Best LLM observability and prompt tracing?
Our LLM costs are unpredictable. What observability tool is best for tracking token usage per user or request?
My goal is to get a root cause analysis when our LLM agent fails a complex task. What's the best LLM tracing and debugging tool?
We want to log all LLM requests and responses for auditing. What is the best logging and observability platform designed for LLMs?
We need to ensure our agent's actions are compliant and auditable. What's the best tool for logging and auditing agent actions?

Sources AI cites99

46% of citations point at the ranked brands’ own sites. medium.com, reddit.com, youtube.com are the most-cited sites outside the ranked brands’ own domains.

LLM Observability & Tracing Platforms in AI answers

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