FilingsCheck v1.3, the frontier edition

How AI models perform when asked for figures reported in SEC filings, with every claim verified against the primary source as filed, and every grade sealed, provable, and reproducible. Nothing on this page asks for trust.

Published 2026-10-07 2530 sealed grades Total elicitation spend $11.081638

The engine scorecard: read this first

Artizar's own accuracy is measured by adversarial probes, not by the models under test: every run injects known-answer probes (true controls plus deliberate falsehoods) and the engine is graded on catching them.

2032 / 2032
probes graded as expected, across all runs
0
false greens: planted falsehoods graded confirmed
0
false alarms: true controls graded contradicted
RunProbes as expectedFalse greensFalse alarms
claude-haiku-4-5254 / 25400
claude-sonnet-5254 / 25400
gpt-5.4-mini254 / 25400
gpt-5.4254 / 25400
claude-sonnet-5-5254 / 25400
claude-opus-5-5254 / 25400
claude-fable-5-1254 / 25400
gpt-5.5254 / 25400

A false green is the failure this system exists to not have.

The model matrix

Each model is asked for exactly the fact the engine verifies and may abstain. The headline is supported / asserted; abstentions are honest and excluded from the denominator. A low headline is not an engine failure: it is the engine catching a model's errors, with a sealed record for each catch.

Model (version as served)SupportedContradictedAbstainedHeadlineElicitation cost
claude-haiku-4-5-20251001 (anthropic)8542012.7% (8/63)$0.049641
claude-sonnet-5 (anthropic)43172371.7% (43/60)$0.070916
gpt-5.4-mini-2026-03-17 (openai)23332741.1% (23/56)$0.020652
gpt-5.4-2026-03-05 (openai)3873884.4% (38/45)$0.065675
claude-sonnet-5-5 (anthropic)6641394.3% (66/70)$1.943888
claude-opus-5-5 (anthropic)6931195.8% (69/72)$0.963456
claude-fable-5-1 (anthropic)6741294.4% (67/71)$2.52339
gpt-5.5-2026-04-23 (openai)51112182.3% (51/62)$5.44402

Elicitation settings

Each run's request settings, read from its report. verify-bundle re-derives every elicited request's hash from them, so a misstated setting fails by name. The series condition repeats the request every earlier edition sent; the frontier condition runs a model at its vendor's top reasoning effort with the vendor's maximum output budget. Rows under different conditions are not directly comparable.

ModelConditionReasoning effortOutput budget (tokens)SamplingThinking field
claude-haiku-4-5seriesnot sent (vendor default)256temperature 0not sent
claude-sonnet-5seriesnot sent (vendor default)256not sent (vendor rejects it)disabled
gpt-5.4-miniseriesnot sent (vendor default)256not sent (vendor rejects it)n/a
gpt-5.4seriesnot sent (vendor default)256not sent (vendor rejects it)n/a
claude-sonnet-5-5frontiermax128,000not sent (vendor rejects it)not sent
claude-opus-5-5frontiermax128,000not sent (vendor rejects it)not sent
claude-fable-5-1frontiermax128,000not sent (vendor rejects it)not sent
gpt-5.5frontierxhigh128,000not sent (vendor rejects it)n/a

Verify this edition yourself

Each model's run ships as a complete fcbundle/v1 bundle. One command per bundle checks, offline, every sealed grade's full chain: the Ed25519 seal signature, the commitment recompute, the audit-log entry hash, the witnessed inclusion proof, report ↔ sealed-verdict consistency, and the prompt-version label against the claims. Any failure is a named error.

python -m artizar verify-bundle bundles/anthropic-claude-haiku-4-5
python -m artizar verify-bundle bundles/anthropic-claude-sonnet-5
python -m artizar verify-bundle bundles/openai-gpt-5.4-mini
python -m artizar verify-bundle bundles/openai-gpt-5.4
python -m artizar verify-bundle bundles/anthropic-claude-sonnet-5-5
python -m artizar verify-bundle bundles/anthropic-claude-opus-5-5
python -m artizar verify-bundle bundles/anthropic-claude-fable-5-1
python -m artizar verify-bundle bundles/openai-gpt-5.5

Key provenance, stated plainly: deployed (operator-published; https://artizar.ai/.well-known/artizar-keys.json; S74 ceremony 2026-07)

Version labels

Comparisons across editions are apples-to-oranges unless these match; the edition assembler refuses mixed-version bundles structurally, and each label below is read from the sealed artifacts, never typed by hand.

SurfaceVersion
Tasksettaskset-v12
Elicitation promptv2 · template sha256 fb0029a26d6e91aea980639ce2e4b3b8cb2f2ed7c663d22bcc6f4875a9dfa6a7
Scoring policypolicy-v7
Period bindingbinding-v4
Metric lexiconlexicon-v7
Harness / reportfilingscheck/v2
Verdict schemaverdict-v4
Context notesnotes-v6
Pricing tableprices-2026-10-06
Bundle formatfcbundle/v1