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LLM Benchmarks

See how today's leading models write Spacetime code, scored task by task on live modules.

Anthropic: Claude Opus 5.5

Rust · With Guidelines · 2026-09-28

100.0%Task Pass Rate

190/190Checks Passed

83Total Evals

100% · 9 evals

Pass	Task	Checks	Run Time
✓	Auth Identity Check	1/1	32.7s
✓	Private Vs Public Table	1/1	29.9s
✓	Registered User Gate	1/1	32.1s
✓	Admin Bootstrap	1/1	29.7s
✓	Role Based Access	1/1	36.2s
✓	Ban List	1/1	32s
✓	Rate Limit	1/1	35.4s
✓	Shared Document	1/1	29.5s
✓	Secure Projection	2/2	36.7s

100% · 15 evals

Pass	Task	Checks	Run Time
✓	Empty Reducers	1/1	35.2s
✓	Basic Tables	1/1	31.5s
✓	Scheduled Table	1/1	30s
✓	Struct In Table	1/1	29.8s
✓	Insert	2/2	29.2s
✓	Update	3/3	30.1s
✓	Delete	3/3	32.3s
✓	Crud	4/4	30.5s
✓	Index Lookup	3/3	30.7s
✓	Init	4/4	32.1s
✓	Connect	1/1	30.1s
✓	Helper Function	3/3	31.4s
✓	Schedule At Time	1/1	30.7s
✓	Cancel Schedule	1/1	31s
✓	Lifecycle Player	1/1	31.7s

100% · 6 evals

Pass	Task	Checks	Run Time
✓	Event Table	1/1	34.8s
✓	Optional Fields	1/1	33.7s
✓	Cascade Delete	1/1	37.2s
✓	Filter And Aggregate	1/1	27.1s
✓	Two Table Join	1/1	34.8s
✓	Unique Constraint	1/1	33.2s

100% · 3 evals

Pass	Task	Checks	Run Time
✓	Scheduled Materialization	4/4	28.3s
✓	Connection Scoped Presence	4/4	28.8s
✓	Scheduled Private	3/3	27.8s

100% · 3 evals

Pass	Task	Checks	Run Time
✓	Automatic Migration	3/3	1m 3s
✓	Incremental Migration	4/4	1m 6s
✓	Hot Swap Compatibility	2/2	1m 1s

100% · 8 evals

Pass	Task	Checks	Run Time
✓	Procedure Return	2/2	27s
✓	Http Fetch	2/2	37s
✓	Fetch And Store	3/3	38.1s
✓	Scheduled Procedure	3/3	35s
✓	Http Handler	2/2	30.6s
✓	Http Router	2/2	33.1s
✓	Idempotent Webhook	3/3	33.9s
✓	External Upload Flow	4/4	35.7s

100% · 8 evals

Pass	Task	Checks	Run Time
✓	View Basic	1/1	30.9s
✓	View Per User	1/1	28.4s
✓	Range Query	1/1	31.9s
✓	Sort And Limit	1/1	32.4s
✓	Find First	1/1	29.7s
✓	Select Distinct	1/1	30.7s
✓	Count Without Collect	1/1	29.6s
✓	Multi Column Filter	1/1	31.1s

100% · 6 evals

Pass	Task	Checks	Run Time
✓	Atomic Idempotent Transfer	5/5	38.5s
✓	Nested Update	3/3	30.7s
✓	Nested Cascade Delete	11/11	34.8s
✓	Batched Delete	4/4	33.7s
✓	Deterministic Context	5/5	26.9s
✓	Reducer Result Table	2/2	32.8s

100% · 10 evals

Pass	Task	Checks	Run Time
✓	Spacetime Product Type	3/3	35.7s
✓	Spacetime Sum Type	3/3	33.6s
✓	Elementary Columns	3/3	34.8s
✓	Product Type Columns	3/3	25.1s
✓	Sum Type Columns	3/3	33s
✓	Scheduled Columns	2/2	28.1s
✓	Constraints	3/3	32.3s
✓	Many To Many	5/5	35.7s
✓	Ecs	7/7	35.7s
✓	Multi Column Index	5/5	36.2s

100% · 8 evals

Pass	Task	Checks	Run Time
✓	Normalized Collection	1/1	35.2s
✓	Heartbeat Isolation	1/1	31.5s
✓	Binary Storage	2/2	34.4s
✓	Normalized Schema	1/1	35.1s
✓	Denormalized Index	4/4	36.7s
✓	Autoinc Reference	2/2	36.6s
✓	Default Values	2/2	56.7s
✓	Special Types	1/1	32.2s

100% · 7 evals

Pass	Task	Checks	Run Time
✓	Three Table Join	2/2	32.1s
✓	Semijoin Intersection	2/2	27.8s
✓	Timestamp Window	2/2	29.6s
✓	Index And Filter	2/2	31.7s
✓	Materialized Aggregate	2/2	32.1s
✓	Query Builder View	2/2	30.8s
✓	View Primary Key	2/2	29.7s