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CURATED MODEL COMPARISON

GPT-5.6 Sol vs Claude Fable 5

A cross-provider shortlist for demanding general-purpose work. Compare exact official model IDs using published signals, provider links, and clearly separated family-level guidance.

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Published data side by side

Each value keeps its original source and scale. Missing data is not treated as zero, and OpenGPT does not create a composite winner.

GPT-5.6 Sol vs Claude Fable 5
Ranking angleGPT-5.6 SolClaude Fable 5
User preferenceRank 11Published value: 1485Original ranking: LMArena ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026Rank 1Published value: 1507Original ranking: LMArena ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026
Intelligence indexRank 2Published value: 59Original ranking: Artificial Analysis ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026Rank 1Published value: 60Original ranking: Artificial Analysis ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026
Objective tasksRank 1Published value: 82.4Original ranking: LiveBench ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026Rank 2Published value: 80.8Original ranking: LiveBench ↗Official identity mapping ↗Research edition: 2026-07 · Jul 24, 2026
Cost per successful taskNo linked comparable dataNo linked comparable data
Open-weight modelsNo linked comparable dataNo linked comparable data

This page organizes published third-party data. OpenGPT did not rerun the underlying evaluations.

What to validate

These strengths and limits describe the wider model family from official positioning, not measured results for this exact version.

OpenAI

GPT-5.6 Sol

gpt-5.6-sol

Family strengths

Covers general, coding, vision, and tool-based workflows. Straightforward managed API with extensive developer tooling.

Family limitations

Closed weights and provider-controlled deployment. Cost, latency, and limits vary by exact model and service tier.

Model detailsOfficial access ↗
Anthropic

Claude Fable 5

claude-fable-5

Family strengths

Well suited to document analysis and sustained written work. Offers managed models for coding and agentic workflows.

Family limitations

Closed weights and API-dependent access. Capabilities and limits differ substantially between model tiers.

Model detailsOfficial access ↗

Continue with your decision

Use the interactive matrix to add more models, then validate the final two on your own prompts and constraints.