# Claude 3 Opus vs GPT-6 Luna (Decisions)

> Side-by-side benchmark comparison for Claude 3 Opus and GPT-6 Luna (Decisions) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-opus-vs-gpt-6-luna-decisions
- Last updated: November 11, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude 3 Opus and GPT-6 Luna (Decisions).

## Summary

- Claude 3 Opus and GPT-6 Luna (Decisions) do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude 3 Opus | GPT-6 Luna (Decisions) |
|----------|----------|----------|
| Creator | Anthropic | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Unspecified |
| Context | 200K | 1.05M |
| Independent public score (not head-to-head) | 28.27 | null |
| Benchmarks Covered | 0 | 0 |
| Pricing (input/output) | $15.00 / $75.00 | $0.10 / $0.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude 3 Opus public-lane score: 14.1 (Estimated · #154/158)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3 Opus public-lane score: 24.7 (Estimated · #171/179)
- GPT-6 Luna (Decisions) public-lane score: Coming soon

## FAQ

### Can I compare Claude 3 Opus and GPT-6 Luna (Decisions) on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Claude 3 Opus vs Claude Fable 5.2](/compare/claude-3-opus-vs-claude-fable-5-2)
- [GPT-6 Luna (Decisions) vs Claude Fable 5.2](/compare/claude-fable-5-2-vs-gpt-6-luna-decisions)
- [Claude 3 Opus vs Gemini 4 Carbon](/compare/claude-3-opus-vs-gemini-4-carbon)
- [GPT-6 Luna (Decisions) vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-gpt-6-luna-decisions)

## Explore More

- [Claude 3 Opus profile](/models/claude-3-opus)
- [GPT-6 Luna (Decisions) profile](/models/gpt-6-luna-decisions)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)