Alternatives Engine

evals Alternatives

Compare open-source alternatives to callstackincubator/evals by fit, deployment, maintenance, quality, and agent readiness.

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Decision Summary

callstackincubator/evals has 12 alternative candidates. Top match is langwatch/langwatch at 100/100 because Similar llm eval with docker/local deployment overlap.

CandidatesExplicitCloudflare-readyAvg similarityTop candidate
123086langwatch/langwatch
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Source Project

callstackincubator/evals

A benchmark suite for evaluating how coding models solve real React Native tasks.

TypeScript MIT DockerLocalCloud

Best For

Where evals fits

evaluate LLM outputs
benchmark prompts and agents
track model quality

Not Best For

When to compare alternatives

edge-only Cloudflare Workers deployment without adaptation

Comparison Table

Arize-ai/phoenix leads this comparison context

Arize-ai/phoenix has the strongest combined agent score and maintenance profile in this comparison.

ProjectSimilarityStarsLanguageDeployQualityAgent
callstackincubator/evalsSource110TypeScriptDocker, Local856
langwatch/langwatch100/1004,872TypeScriptDocker, Vercel7380
lmnr-ai/lmnr100/1003,279TypeScriptDocker, Vercel3478
minghinmatthewlam/openbench97/100134PythonDocker, Library Only756
Arize-ai/phoenix83/10011,610PythonDocker, Vercel5789
ianarawjo/ChainForge83/1003,031TypeScriptDocker, Library Only1266

Alternative Match

langwatch/langwatch

100/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

The platform for LLM evaluations and AI agent testing

ExplicitLlm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality73
Agent80

Alternative Match

lmnr-ai/lmnr

100/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Laminar - open-source observability platform purpose-built for AI agents. YC S24.

ExplicitLlm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality34
Agent78

Alternative Match

minghinmatthewlam/openbench

97/100

Same llm eval intent with coding_agent overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Same model, different wrapper: a from-scratch benchmark comparing coding-agent harnesses (codex, pi, opencode, cursor, devin) and open models on correctness, speed, and token cost

ExplicitLlm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality7
Agent56

Alternative Match

Arize-ai/phoenix

83/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

AI Observability & Evaluation

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality57
Agent89

Alternative Match

ianarawjo/ChainForge

83/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

An open-source visual programming environment for battle-testing prompts to LLMs.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality12
Agent66

Alternative Match

langfuse/langfuse

82/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality80
Agent90

Alternative Match

promptfoo/promptfoo

82/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality72
Agent88

Alternative Match

agentevals-dev/agentevals

81/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

agentevals is a framework-agnostic evaluations solution based on OpenTelemetry traces

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local, cloud.
Quality25
Agent69

Alternative Match

Purewhiter/mobilegym

81/100

Similar llm eval with local/cloud deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

[EMNLP 2026] MobileGym: A Verifiable and Highly Parallel Simulation Platform for Mobile GUI Agent Research · 浏览器里运行的安卓模拟器 · Browser-hosted Android Simulator · Verifiable Evaluation · Scalable Online RL Training

Llm EvalLocalCloudLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: local, cloud.
Quality10
Agent60

Alternative Match

Helicone/helicone

79/100

Similar llm eval with docker/local deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

🧊 Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 🍓

Llm EvalDockerLocalLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: docker, local.
Quality22
Agent78

Alternative Match

comet-ml/opik-openclaw

79/100

Similar llm eval with local/cloud deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

🦞 Official plugin for OpenClaw that exports agent traces to Opik. See and monitor agent behaviour, cost, tokens, errors and more.

Llm EvalLocalCloudLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: local, cloud.
Quality16
Agent61

Alternative Match

promptfoo/promptfoo-action

79/100

Similar llm eval with local/cloud deployment overlap.

Fit: Strong replacement candidate with overlapping indexed use cases.

The GitHub Action for Promptfoo. Test your prompts, agents, and RAGs. AI Red teaming, pentesting, and vulnerability scanning for LLMs. Compare performance of GPT, Claude, Gemini, Llama, and more. Simple declarative configs with command line and CI/CD integration.

Llm EvalLocalCloudLlm Provider
Replacement risklow
Adoption noteSame category, so it can be evaluated as a direct functional substitute.
Adoption noteDeployment overlap: local, cloud.
Quality15
Agent58

Data Source

d1 / d1_query

1213 loaded projects. Generated at 2026-09-27T00:30:08.612Z.