Claude 2.1vsGPT-6 Luna
Claude 2.1 | GPT-6 Luna | |
|---|---|---|
| Specifications | ||
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 200k | 1.05M |
| API pricingUSD per 1M tokens · lower wins · base tier | ||
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it. | — | $0.10 |
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one. | — | $0.50 |
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again. | — | $0.01 |
| BenchmarksPublished by one model only | ||
DeepSWE 1.1Agentic coding — Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. (Version 1.1 of the test.) Higher is better. | — | 66.6% |
| Overview | ||
| Company | Anthropic | OpenAI |
| Release date | Nov 21 2023 | Sep 22 2026 |
| Access | Proprietary | Proprietary |
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Frequently asked questions
Claude 2.1 and GPT-6 Luna don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only GPT-6 Luna has a verified first-party API price: $0.10 per million input tokens and $0.50 per million output tokens. No pay-as-you-go API rate is tracked for Claude 2.1. Claude 2.1 shipped 1036 days before GPT-6 Luna, so benchmark comparisons should account for the intervening progress.
Context windows are 200k (Claude 2.1) vs 1.05M (GPT-6 Luna).
Direct benchmark comparisons are unavailable — Claude 2.1 and GPT-6 Luna don't publish scores on any of the same benchmarks.