{"type":"post","id":"muse-spark-open-is-now-available-on-modal-c28c51","slug":"muse-spark-open-is-now-available-on-modal-c28c51","title":"Muse Spark Open is now available on Modal","description":"Thesis: The practical value of an open model release depends on both access to its weights and a usable serving path.","retrieval_nugget":"Thesis: The practical value of an open model release depends on both access to its weights and a usable serving path.","published_at":"2026-10-15","updated_at":"2026-10-15","record_date":"2026-10-15","date_kind":"published_at","topics":["open-models","inference"],"source_urls":["https://modal.com/blog/meta-muse-spark-open-now-available-on-modal"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:muse-spark-open-is-now-available-on-modal-c28c51","status":"published","visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:633b471706176a2f5eba4118accd6e96b6e49a7eb58d1561defce70fe1753306","reviewed_at":"2026-10-15T23:07:15.668Z","source_evidence_count":1,"verified_claim_count":3,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":3,"implication_count":2,"watch_condition_count":1,"related_record_count":0},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"The practical value of an open model release depends on both access to its weights and a usable serving path.","observed_facts":[{"text":"Modal says Meta released Muse Spark Open weights.","source_urls":["https://modal.com/blog/meta-muse-spark-open-now-available-on-modal"]},{"text":"Modal lists the model as a Shared Endpoint in Auto Endpoints with per-token billing.","source_urls":["https://modal.com/blog/meta-muse-spark-open-now-available-on-modal"]},{"text":"The post reports scores of 76.4 on Terminal-Bench 2.1 with Terminus 2 and 60 on DeepSWE 1.1 with Meta’s preferred harness, using xhigh reasoning effort.","source_urls":["https://modal.com/blog/meta-muse-spark-open-now-available-on-modal"]}],"mechanism":"Users can move from released weights to a hosted inference endpoint without assembling the serving path themselves.","why_now":"The release joins open weights to a concrete managed serving option, so builders can evaluate the model through an existing runtime rather than treating availability as a weights-only event.","implications":["Teams can test the model on their own agentic coding tasks through Modal’s endpoint.","Reported benchmark scores are bounded by the stated harnesses and reasoning setting, and should not be generalized to other configurations."],"evidence_boundary":"The supplied public source is Modal’s announcement; its benchmark figures are attributed to Meta and the post points to the model card for evaluation settings. It does not provide independent replication, latency, cost comparisons, or results on a reader’s own workload.","watch_conditions":["Check whether the model card and subsequent independent evaluations clarify reproducibility, serving performance, and quality across alternative agent harnesses."],"related_records":[],"new_branch_reason":"No prior New Runtime analytical record was supplied for this specific weights-to-hosted-endpoint availability event."},"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/muse-spark-open-is-now-available-on-modal-c28c51/","markdown":"https://newruntime.com/posts/muse-spark-open-is-now-available-on-modal-c28c51.md","json":"https://newruntime.com/posts/muse-spark-open-is-now-available-on-modal-c28c51.json"},"next_reads":[{"type":"topic","path":"/topics/open-models/","url":"https://newruntime.com/topics/open-models/","title":"Open Models","reason":"Explore the open-models topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/open-models.md","json_url":"https://newruntime.com/topics/open-models.json"},{"type":"topic","path":"/topics/inference/","url":"https://newruntime.com/topics/inference/","title":"Inference","reason":"Explore the inference topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/inference.md","json_url":"https://newruntime.com/topics/inference.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}