{"slug":"best-stateful-sandboxes-for-code-execution-in-2026","name":"Best Stateful Sandboxes for Code Execution in 2026","summary":"# Best Stateful Sandboxes for Code Execution in 2026","publisher":"beam.cloud","homepage":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","kind":"eval","hasApi":true,"hasMcp":false,"costRange":"unknown","costNotes":"Unknown: pricing was not stated in the intake evidence.","functions":["code","memory","rank","test","evaluate","payment"],"slices":[{"functionId":"code","label":"code","note":"Inferred from executor","cost":"Unknown"},{"functionId":"memory","label":"memory","note":"Inferred from executor","cost":"Unknown"},{"functionId":"rank","label":"rank","note":"Inferred from executor","cost":"Unknown"},{"functionId":"test","label":"test","note":"Inferred from executor","cost":"Unknown"},{"functionId":"evaluate","label":"evaluate","note":"Inferred from executor","cost":"Unknown"},{"functionId":"payment","label":"payment","note":"Inferred from executor","cost":"Unknown"}],"interfaces":[{"kind":"http"}],"composabilityRationale":"Heuristic from executor evidence. Grok pass was unavailable or incomplete. No usage metrics were observed.","signals":[],"functionProbabilities":[{"functionId":"code","value":0.92,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"},{"functionId":"memory","value":0.8,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"},{"functionId":"rank","value":0.8,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"},{"functionId":"test","value":0.8,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"},{"functionId":"evaluate","value":0.72,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"},{"functionId":"payment","value":0.72,"source":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"lexical","observedAt":"2026-10-18T22:56:10.085Z"}],"claimVerification":[{"key":"mcp","status":"unverified","asserted":"false","evidenceSource":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"fallback"},{"key":"api","status":"unverified","asserted":"true","evidenceSource":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"fallback"},{"key":"cost","status":"unverified","asserted":"unknown","evidenceSource":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"fallback"},{"key":"license","status":"unverified","asserted":"","evidenceSource":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","method":"fallback"}],"tweets":[],"notes":[],"origin":"intake","createdAt":"2026-10-18T22:56:10.860Z","updatedAt":"2026-10-18T22:56:10.860Z","sources":[{"kind":"web","label":"executor","url":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","excerpt":"← All posts\n\nTutorials\n\nEngineering\n\n# Best Stateful Sandboxes for Code Execution in 2026\n\nNathanael Chiang\n\nJune 6, 20269 min read\n\n**The best code execution sandbox for AI agents is one with persistence.** Most comparison guides rank sand","at":"2026-10-18T22:56:10.860Z"}],"recordId":"cmp_best-stateful-sandboxes-for-code-execution-in-2026","claims":{"name":"Best Stateful Sandboxes for Code Execution in 2026","summary":"# Best Stateful Sandboxes for Code Execution in 2026","kind":"eval","publisher":"beam.cloud","homepage":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","costRange":"unknown","costNotes":"Unknown: pricing was not stated in the intake evidence.","functions":["code","memory","rank","test","evaluate","payment"],"slices":[{"functionId":"code","label":"code","note":"Inferred from executor","cost":"Unknown"},{"functionId":"memory","label":"memory","note":"Inferred from executor","cost":"Unknown"},{"functionId":"rank","label":"rank","note":"Inferred from executor","cost":"Unknown"},{"functionId":"test","label":"test","note":"Inferred from executor","cost":"Unknown"},{"functionId":"evaluate","label":"evaluate","note":"Inferred from executor","cost":"Unknown"},{"functionId":"payment","label":"payment","note":"Inferred from executor","cost":"Unknown"}],"interfaces":[{"kind":"http"}],"composabilityRationale":"Heuristic from executor evidence. Grok pass was unavailable or incomplete. No usage metrics were observed."},"relations":[{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"e2b-vs-daytona-vs-blaxel-ai-sandbox-comparison","kind":"fills-same-slot-as","note":"Shared functions code, memory, payment, test. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"lm-evaluation-harness-pt","kind":"fills-same-slot-as","note":"Shared functions evaluate, memory, rank, test. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"comparing-ai-agent-sandbox-platforms-e2b-modal-daytona-and-more","kind":"fills-same-slot-as","note":"Shared functions code, evaluate, memory, payment. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"ai-agent-sandbox-comparison-2026-seven-platforms","kind":"fills-same-slot-as","note":"Shared functions code, evaluate, memory, test. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"best-code-execution-sandboxes-for-ai-agents-in-2026","kind":"fills-same-slot-as","note":"Shared functions code, memory, payment, rank. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"daytona-alternatives-4-ai-agent-sandbox-platforms-compared-2026","kind":"fills-same-slot-as","note":"Shared functions code, memory, payment, rank. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"harness-arena","kind":"fills-same-slot-as","note":"Shared functions code, evaluate, rank, test. Can fill the same function slot."},{"from":"best-stateful-sandboxes-for-code-execution-in-2026","to":"best-code-execution-sandbox-for-openhands-in-2026","kind":"fills-same-slot-as","note":"Shared functions code, evaluate, test. Can fill the same function slot."}],"explain":{"score":6,"formula":"100 × sum(weight × value) over observed factors only. Unobserved factors are omitted, not zeroed.","factors":[{"id":"github_health","label":"GitHub health","weight":0.18,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"agent_use","label":"Agent use","weight":0.16,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"human_notes","label":"Human notes","weight":0.14,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"composability","label":"Composability","weight":0.16,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"checklist","label":"Checklist","weight":0.1,"value":0.3333333333333333,"contribution":0.03333333333333333,"why":"No MCP surface is declared. An API is declared. Cost is unknown. 1 of 3 checklist fields are complete.","sources":[],"evidence":"observed"},{"id":"evidence_quality","label":"Evidence quality","weight":0.14,"value":0.18107144632819594,"contribution":0.025350002485947435,"why":"1 sources cover 1 evidence types. The latest dated evidence is 2026-10-18. Freshness is omitted unless observed as a signal.","sources":[{"kind":"web","label":"executor","url":"https://www.beam.cloud/blog/best-stateful-sandbox-code-execution-2026","excerpt":"← All posts\n\nTutorials\n\nEngineering\n\n# Best Stateful Sandboxes for Code Execution in 2026\n\nNathanael Chiang\n\nJune 6, 20269 min read\n\n**The best code execution sandbox for AI agents is one with persistence.** Most comparison guides rank sand","at":"2026-10-18T22:56:10.860Z"}],"evidence":"observed"},{"id":"benchmark","label":"Benchmarks","weight":0.12,"why":"insufficient evidence","sources":[],"evidence":"insufficient"}],"missing":["GitHub health: insufficient evidence","Agent use: insufficient evidence","Human notes: insufficient evidence","Composability: insufficient evidence","Benchmarks: insufficient evidence"]},"score":6}