Specification

No structured attributes yet.

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

0

Source tiers

—

Freshest observation

—

Conflicts

None

Modalities

Modalities unavailable.

Capabilities

Tool calling
Unavailable
Structured output
Unavailable
Reasoning
Unavailable
Vision
Unavailable
Audio
Unavailable
Fine-tuning available
Unavailable

No capability flags have been observed from a source yet — we do not infer them.

No structured attributes yet.

Benchmark results
Benchmark	Score	Metric	Config	Evaluated	Source
Aider polyglot	70.7%	pass_rate_2	date=2025-05-25 · command=aider --model claude-opus-4-20250514 · dirname=2025-05-25-19-57-20--opus4-diff-exuser · versions=0.83.3.dev	25 May 2025	aider.chatT2
Aider polyglot	98.7%	percent_cases_well_formed	date=2025-05-25 · command=aider --model claude-opus-4-20250514 · dirname=2025-05-25-19-57-20--opus4-diff-exuser · versions=0.83.3.dev	25 May 2025	aider.chatT2

Scores are reported as published, with their evaluation configuration (harness, prompting, judge). Results with different configs are not directly comparable — see methodology.

Current prices

No current prices recorded

Prices appear when a provider publishes a public pricing page we crawl.

Price history

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

No claims recorded yet

Claims appear when a source states a fact; every later change is kept as a new claim.

11 Sept 2026
New modelModelclaude-opus-4-20250514 (no think)
New model: claude-opus-4-20250514 (no think)
aider_leaderboard
raw.githubusercontent.com
11 Sept 2026
Benchmark resultModelclaude-opus-4-20250514 (no think)
claude-opus-4-20250514 (no think) scores 98.7% on Aider polyglot
aider_leaderboard
aider.chat
11 Sept 2026
Benchmark resultModelclaude-opus-4-20250514 (no think)
claude-opus-4-20250514 (no think) scores 70.7% on Aider polyglot
aider_leaderboard
aider.chat

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
Aider polyglot leaderboard (data file on GitHub)	raw.githubusercontent.com/Aider-AI/aider/main/aider/website/_data/polyglot_leaderboard.yml	leaderboard	T2· Quality secondary	41 min ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.