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Claude Opus 4.8 vs GPT-5.6 Luna
List-price comparison ·Claude Opus 4.8 details ·GPT-5.6 Luna details
For a typical workload (100,000 requests / mo), GPT-5.6 Luna is the cheapest — 78% less than the priciest here ($360.00/mo vs $1,600.00/mo).
| Claude Opus 4.8 | GPT-5.6 Luna | |
|---|---|---|
| Input / 1M tokens | $5.00 | $1.00 |
| Output / 1M tokens | $25.00 | $6.00 |
| Typical request (1,200 in + 400 out) | $0.016 | $0.0036 |
| Context window | 1M tokens | 1050k tokens |
| Max output | 128k tokens | 128k tokens |
| Quality score | 97/100 | 95/100 |
| Tier | Flagship | Flagship |
| Provider | Anthropic | OpenAI |
Projected monthly cost
| Requests / mo | Claude Opus 4.8 | GPT-5.6 Luna |
|---|---|---|
| 1,000 | $16.00 | $3.60 |
| 10,000 | $160.00 | $36.00 |
| 100,000 | $1,600.00 | $360.00 |
Claude Opus 4.8
Best-in-class for complex multi-step agentic workflows, long-horizon planning, and large codebase refactors. Strong instruction-following on ambiguous, open-ended tasks.
Highest per-token cost in the catalog and noticeably higher latency — reserve for tasks that genuinely need top-tier reasoning rather than routine completions.
GPT-5.6 Luna
Auto-synced from OpenRouter — no editorial write-up yet.
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Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.