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Recommendation · Long-document work

Best evidence-backed choices for Long-document work with all public sources: Claude Fable 5, Claude Opus 4.8, Claude Opus 4.7, and GPT-5.5.

Claude Fable 5Anthropic · frontier
Verified & stable

The current evidence supports a shortlist, not a single winner.

Direct sources
16
Coverage
100%
Data version
Jun 20, 2026
Compare top optionsShare this report
Evidence behind the call
Data version Jun 20, 202616 direct source linksNo excluded sourcesAll public sources
What the data can support5 ready, 1 partial, 1 missing for the current task result.
Minimum source requirementenough direct data · enough direct data · enough direct data · enough direct data
Cost / latencyLatency is unavailable in the current verified source data.
Current top picksClaude Fable 5, Claude Opus 4.8, Claude Opus 4.7, GPT-5.5
Answer typeTop picks, not one winner
Coverage100% visible · 100% checked
PresetLong-document work
SourcesAll public sources
Latest strong source dataJun 24, 2026
Where sources differ4 source rows behind this answer
1
Claude Fable 5Artificial Analysis · Humanity's Last Exam · 53.336 · #1 · 100pctl
used for answer
2
Claude Fable 5Vals AI · CorpFin v2 · 71.834 · #1 · 100pctl
used for answer
3
Claude Fable 5Vals AI · ProofBench · 77 · #1 · 100pctl
used for answer
4
Claude Fable 5Vals AI · MMLU Pro · 91.502 · #1 · 100pctl
used for answer
Compare top optionsOpen comparison tableCoverage report
Ranked options

Direct matches first, then weaker or missing-data cases

Direct matches stay strict; strong models with indirect data still surface below. Open a row for its scores, source links, and caveats.

Primary group · Direct-match leaders
#1Claude Fable 5Anthropic · frontier100.0100% visible
enough direct data · recent · strong · clearfrontier-priced price band from registry metadataLatency is unavailable in the current verified source data.
Visible tradeoffs3.2% score spread · 100% recent data · exact alias
Fit score100.0
Strongest source datareasoning math science · long context

Claude Fable 5 is strongest on Reasoning / math / science and Long context for this preset.

  • Last updated: Latest visible source row is 0 days old.
  • Where sources differ: 3-point cross-domain spread; warning threshold is 30.
  • Data checks: No open review item was matched to this recommendation.

The visible evidence mix still leans on weaker or split signals, especially around Document understanding, source verification state, and any backfilled or relay evidence still in play.

Data parser or model matching changes recently moved Artificial Analysis, Vals AI, Arena.

Verified rows
14
Hand-checked rows
0
Copied rows
0
Backfilled rows
0
Headline lane
Jun 24, 2026
Background data
No extra context
Formula recommendation-fit-v2.0.0.
Source linksArtificial AnalysisHumanity's Last Exam · 53.336 · #1 · 100pctlVals AICorpFin v2 · 71.834 · #1 · 100pctlVals AIProofBench · 77 · #1 · 100pctl
Measured by
public third-party sources
Source basis
exact alias
Compared fairly because
same test setup, version groups, source-balanced before averaging
Open model
Open compare
#2Claude Opus 4.8Anthropic · frontier99.4100% visible
enough direct data · recent · strong · clearfrontier-priced price band from registry metadataLatency is unavailable in the current verified source data.
Visible tradeoffs7.5% score spread · 100% recent data · exact alias
Fit score99.4
Strongest source datareasoning math science · long context

Claude Opus 4.8 is strongest on Reasoning / math / science and Long context for this preset.

  • Last updated: Latest visible source row is 0 days old.
  • Where sources differ: 8-point cross-domain spread; warning threshold is 30.
  • Data checks: No open review item was matched to this recommendation.

The visible evidence mix still leans on weaker or split signals, especially around Document understanding, source verification state, and any backfilled or relay evidence still in play.

Data parser or model matching changes recently moved Artificial Analysis, Vals AI, Arena.

Verified rows
14
Hand-checked rows
0
Copied rows
0
Backfilled rows
0
Headline lane
Jun 24, 2026
Background data
No extra context
Formula recommendation-fit-v2.0.0.
Source linksArtificial AnalysisHumanity's Last Exam · 45.737 · #2 · 100pctlArtificial AnalysisGPQA · 92.02 · #5 · 99pctlArtificial AnalysisCritPt · 20.857 · #5 · 99pctl
Measured by
public third-party sources
Source basis
exact alias
Compared fairly because
same test setup, version groups, source-balanced before averaging
Open model
Open compare
#3Claude Opus 4.7Anthropic · frontier98.3official100% visible
Official company result included
enough direct data · recent · strong · clearfrontier-priced price band from registry metadataLatency is unavailable in the current verified source data.
Visible tradeoffs6.8% score spread · 100% recent data · exact alias
Fit score98.3
Strongest source datareasoning math science · document understanding

Claude Opus 4.7 is strongest on Reasoning / math / science and Document understanding for this preset.

  • Last updated: Latest visible source row is 0 days old.
  • Where sources differ: 7-point cross-domain spread; warning threshold is 30.
  • Data checks: No open review item was matched to this recommendation.

Provider-official evidence is self-reported company data. It can support recency, but it is not third-party test data.

The current lead depends partly on official company results, so share it with a warning until independent coverage deepens.

Some visible coverage is coming from provider-official source links while independent coverage catches up.

Verified rows
15
Hand-checked rows
1
Copied rows
0
Backfilled rows
0
Headline lane
Jun 24, 2026
Background data
No extra context
Formula recommendation-fit-v2.0.0.
Source linksVals AIMortgageTax · 70.27 · #1 · 100pctlProvider official evalsHumanity's Last Exam · 46.9 · #1 · 100pctlArenaText Arena · Math · 1,503.969 · #4 · 99pctl
Measured by
mixed independent and provider-official sources
Source basis
exact alias
Compared fairly because
same test setup, version groups, source-balanced before averaging
Open model
Open compare
#4GPT-5.5OpenAI · frontier92.1official100% visible
Official company result included
enough direct data · recent · strong · clearfrontier-priced price band from registry metadataLatency is unavailable in the current verified source data.
Visible tradeoffs5.1% score spread · 84.2% recent data · exact alias
Fit score92.1
Strongest source datalong context · document understanding

GPT-5.5 is strongest on Long context and Document understanding for this preset.

  • Last updated: Latest visible source row is 0 days old.
  • Where sources differ: 5-point cross-domain spread; warning threshold is 30.
  • Data checks: No open review item was matched to this recommendation.

Provider-official evidence is self-reported company data. It can support recency, but it is not third-party test data.

The current lead depends partly on official company results, so share it with a warning until independent coverage deepens.

Some visible coverage is coming from provider-official source links while independent coverage catches up.

Verified rows
25
Hand-checked rows
1
Copied rows
0
Backfilled rows
0
Headline lane
Jun 24, 2026
Background data
No extra context
Formula recommendation-fit-v2.0.0.
Source linksVals AIGPQA Diamond · 93.182 · #3 · 99pctlVals AICorpFin v2 · 68.415 · #3 · 98pctlArenaText Arena · Math · 1,493.51 · #9 · 97pctl
Measured by
mixed independent and provider-official sources
Source basis
exact alias
Compared fairly because
same test setup, version groups, source-balanced before averaging
Open model
Open compare
#5Gemini 3.1 ProGoogle · frontier85.5official100% visible
PreviewOfficial company result includedModel family view
Source status unavailablefrontier price bandLatency unavailable
Visible tradeoffs27.1% score spread · 100% recent data · exact direct
Fit score85.5
Strongest source datalong context · reasoning math science

Gemini 3.1 Pro is strongest on Long context and Reasoning / math / science for this preset.

Provider-official evidence is self-reported company data. It can support recency, but it is not third-party test data.

The current lead depends partly on official company results, so share it with a warning until independent coverage deepens.

Some visible coverage is coming from provider-official source links while independent coverage catches up.

Verified rows
18
Hand-checked rows
2
Copied rows
0
Backfilled rows
0
Headline lane
Jun 24, 2026
Background data
No extra context
Formula recommendation-fit-v2.0.0.

No source link clears the minimum source requirement.

Measured by
mixed independent and provider-official sources
Source basis
exact direct
Compared fairly because
same test setup, version groups, source-balanced before averaging
Open model
Open compare
Evidence & limits

Read the argument before you commit

Why these options made the listtop reasons behind the current answer
  • Current shortlist: Claude Fable 5, Claude Opus 4.8, Claude Opus 4.7, and GPT-5.5.
  • Claude Fable 5 is the strongest exact-match option still visible.
  • Claude Fable 5 currently leads the fit score at 100.0, but the evidence is still too mixed for a single headline winner.
What to pressure testwhere the current answer is still fragile
  • No single winner: The current public evidence is only strong enough to support a shortlist, not one winner.
  • Strongest alternative · Claude Opus 4.8: Claude Opus 4.8 is strongest on Reasoning / math / science and Long context for this preset.
  • Evidence risk: The visible evidence mix still leans on weaker or split signals, especially around Document understanding, source verification state, and any backfilled or relay evidence still in play.
What would flip the answerthe assumptions the result rests on
  • If you tighten benchmark spread: Claude Fable 5 still holds if you care more about aligned evidence than upside.
  • If you tighten recency: Claude Fable 5 remains viable because the visible evidence is still fairly fresh.
  • If you require open-weight: No open-weight model currently clears the same evidence floor.
  • If cost and speed matter more: No clearly cheaper alternative currently clears the same evidence floor.
Why this is not a clean winlimitations to keep in mind
  • The current evidence supports a shortlist, not a single winner.
  • Claude Opus 4.8 remains close enough that a different scoring recipe can still flip the public answer.
Source links6 rows behind this answer
Data limitswhere the public data is thin
  • cost: partial · Only registry price bands are ready; exact price calculations are not shown.
  • latency: missing · Latency is not available in the current verified shortlist data.
Not chosen6 well-known models left off

GPT-5

Closest option

  • GPT-5 has direct evidence on part of this preset, but not enough to clear the exact-match floor.
Open model

Grok 4.20

Closest option

  • Grok 4.20 has direct evidence on part of this preset, but not enough to clear the exact-match floor.
Open model

Claude Haiku 4.5

Closest option

  • Claude Haiku 4.5 has direct evidence on part of this preset, but not enough to clear the exact-match floor.
Open model

Gemini 3.5 Flash

Closest option

  • Gemini 3.5 Flash has direct evidence on part of this preset, but not enough to clear the exact-match floor.
Open model

GPT-5.4 mini

Closest option

  • GPT-5.4 mini has direct evidence on part of this preset, but not enough to clear the exact-match floor.
Open model

Gemini 2.0 Pro Experimental

Known current model

  • Current generated catalog does not have enough matching source links for this task preset.
Open model
Needs more source data12 tracked models with thin public data

GPT-5

OpenAI · 100% visible · 100% direct · 0% indirect

GPT-5 has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencedocument understanding
Open model

Grok 4.20

xAI · 100% visible · 100% direct · 0% indirect

Grok 4.20 has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencelong context
Open model

Claude Haiku 4.5

Anthropic · 100% visible · 100% direct · 0% indirect

Claude Haiku 4.5 has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencelong context
Open model

Gemini 3.5 Flash

Google · 100% visible · 100% direct · 0% indirect

Gemini 3.5 Flash has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencedocument understanding
Open model

GPT-5.4 mini

OpenAI · 100% visible · 100% direct · 0% indirect

GPT-5.4 mini has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencedocument understanding
Open model

GPT-5.4 nano

OpenAI · 100% visible · 100% direct · 0% indirect

GPT-5.4 nano has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencelong context
Open model

Grok 4

xAI · 100% visible · 100% direct · 0% indirect

Grok 4 has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencelong context
Open model

Grok 4.3

xAI · 100% visible · 100% direct · 0% indirect

Grok 4.3 has direct evidence on part of this preset, but not enough to clear the exact-match floor.

long contextreasoning math science
Open model

Grok 4.1 Fast

xAI · 100% visible · 100% direct · 0% indirect

Grok 4.1 Fast has direct evidence on part of this preset, but not enough to clear the exact-match floor.

long contextreasoning math science
Open model

Gemini 3 Pro Preview

Google · 100% visible · 100% direct · 0% indirect

Gemini 3 Pro Preview has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencelong context
Open model

Gemini 2.5 Pro

Google · 100% visible · 100% direct · 0% indirect

Gemini 2.5 Pro has direct evidence on part of this preset, but not enough to clear the exact-match floor.

document understandinglong context
Open model

Gemini 3 Flash

Google · 100% visible · 100% direct · 0% indirect

Gemini 3 Flash has direct evidence on part of this preset, but not enough to clear the exact-match floor.

reasoning math sciencedocument understanding
Open model

Shareable claims with evidence

The product should generate public claims worth checking, not just filter state.

Open change report
alert
8 review items still need manual judgment

The product keeps parser and mapping ambiguity visible instead of silently guessing.

Open
models
Arena moved via real benchmark movement

80 benchmark rows were added, 4 removed, and 16276 existing rows changed value or evaluation date. Window: 2026-06-20T23:37:10Z -> 2026-06-24T03:37:55Z.

Open
models
Artificial Analysis moved via real benchmark movement

28 benchmark rows were added, 0 removed, and 5949 existing rows changed value or evaluation date. Window: 2026-06-20T23:37:17Z -> 2026-06-24T03:38:09Z.

Open
sources
LLMBase moved via source updated leaderboard

The saved raw source snapshot changed relative to the previous run. Window: 2026-06-20T23:37:24Z -> 2026-06-24T03:38:25Z.

Open
sources
Terminal-Bench moved via source updated leaderboard

The saved raw source snapshot changed relative to the previous run. Window: 2026-06-20T23:37:34Z -> 2026-06-24T03:38:36Z.

Open

What changed this week

alert
8 review items still need manual judgment

The product keeps parser and mapping ambiguity visible instead of silently guessing.

Open
models
Arena moved via real benchmark movement

80 benchmark rows were added, 4 removed, and 16276 existing rows changed value or evaluation date. Window: 2026-06-20T23:37:10Z -> 2026-06-24T03:37:55Z.

Source-data window: 2026-06-20T23:37:10Z -> 2026-06-24T03:37:55Z

Open reportModelBenchmarkSource
models
Artificial Analysis moved via real benchmark movement

28 benchmark rows were added, 0 removed, and 5949 existing rows changed value or evaluation date. Window: 2026-06-20T23:37:17Z -> 2026-06-24T03:38:09Z.

Source-data window: 2026-06-20T23:37:17Z -> 2026-06-24T03:38:09Z

Open reportModelBenchmarkSource
sources
LLMBase moved via source updated leaderboard

The saved raw source snapshot changed relative to the previous run. Window: 2026-06-20T23:37:24Z -> 2026-06-24T03:38:25Z.

Source-data window: 2026-06-20T23:37:24Z -> 2026-06-24T03:38:25Z

Open
sources
Terminal-Bench moved via source updated leaderboard

The saved raw source snapshot changed relative to the previous run. Window: 2026-06-20T23:37:34Z -> 2026-06-24T03:38:36Z.

Source-data window: 2026-06-20T23:37:34Z -> 2026-06-24T03:38:36Z

Open
product
Initial comparison-table release

Added comparison-table homepage, same-test normalization, per-cell source links, source pages, and custom-ranking preview.

Source-data window: 2026-04-16

Open changelog
models
Methodology contract published

Documented comparability rules, raw-vs-normalized behavior, and why unlike metrics are never averaged by default.

Source-data window: 2026-04-16

models
Artificial Analysis ID rule adopted

Stable model and creator IDs are now the preferred external identity keys when available.

Source-data window: 2026-04-15

Data version

Current snapshot.

Data version Jun 20, 2026Model list checked9 providers · 1081 tracked modelsPage refreshed Jul 5, 2026

If this date looks stale, you may be seeing an older build or cached deploy.

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