GPT-5.2 Chat vs GPT-6 Luna (batch)
| Signal | GPT-5.2 Chat | Delta | GPT-6 Luna (batch) |
|---|---|---|---|
Capabilities | 83 | -17 | |
Benchmarks | 77 | +77 | |
Pricing | 86 | -14 | |
Context window size | 81 | -14 | |
Recency | 81 | -19 | |
Output Capacity | 72 | -10 | |
| Overall Result | 1 wins | of 6 | 5 wins |
Score History
90.5
current score
GPT-5.2 Chat
right now
40
current score
GPT-5.2 Chat
OpenAI
GPT-6 Luna (batch)
OpenAI
GPT-6 Luna (batch) saves you $857.50/month
That's $10290.00/year compared to GPT-5.2 Chat at your current usage level of 100K calls/month.
| Metric | GPT-5.2 Chat | GPT-6 Luna (batch) | Winner |
|---|---|---|---|
| Overall Score | 91 | 40 | GPT-5.2 Chat |
| Rank | #24 | #238 | GPT-5.2 Chat |
| Quality Rank | #24 | #238 | GPT-5.2 Chat |
| Adoption Rank | #24 | #238 | GPT-5.2 Chat |
| Parameters | -- | -- | -- |
| Context Window | 128K | 1050K | GPT-6 Luna (batch) |
| Pricing | $1.75/$14.00/M | $0.05/$0.25/M | -- |
| Signal Scores | |||
| Capabilities | 83 | 100 | GPT-6 Luna (batch) |
| Benchmarks | 77 | -- | GPT-5.2 Chat |
| Pricing | 86 | 100 | GPT-6 Luna (batch) |
| Context window size | 81 | 96 | GPT-6 Luna (batch) |
| Recency | 81 | 100 | GPT-6 Luna (batch) |
| Output Capacity | 72 | 82 | GPT-6 Luna (batch) |
Our score (0-100) is driven by benchmark performance (90%) from Arena Elo ratings, MMLU, GPQA, HumanEval, SWE-bench, and 15+ standardized evaluations. Capabilities and context window serve as tiebreakers (10%). Learn more about our methodology.
Scores 91/100 (rank #24), placing it in the top 92% of all 290 models tracked.
Scores 40/100 (rank #238), placing it in the top 18% of all 290 models tracked.
GPT-5.2 Chat has a 51-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose GPT-5.2 Chat when you need:
- General-purpose tasks across coding, writing, and analysis
Choose GPT-6 Luna (batch) when you need:
- High-volume production workloads where API costs must be minimized
- Processing long documents or large codebases (1050K token context)
- Step-by-step reasoning and chain-of-thought problem solving
GPT-6 Luna (batch) offers 98% better value per quality point. At 1M tokens/day, you'd spend $4.50/month with GPT-6 Luna (batch) vs $236.25/month with GPT-5.2 Chat - a $231.75 monthly difference.
Both models have comparable response speeds. For most applications, the latency difference is negligible.
When latency matters most: Interactive chatbots, IDE code completion, real-time translation, and user-facing applications where response time directly impacts experience. For batch processing, background summarization, or offline analysis, latency is less critical.
Code generation & review
Based on overall model capabilities and architecture for coding tasks like generating functions, debugging, and refactoring
Customer support chatbot
Suitable for user-facing chat with competitive response times. GPT-6 Luna (batch) also offers lower per-token costs for high-volume support
Long document analysis
Larger context window (1050K tokens) can process longer documents, contracts, and research papers in a single pass
Batch data extraction
Lower output pricing ($0.25/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (91/100) correlates with better nuance, coherence, and style in long-form content
Image understanding & OCR
Supports vision input - can analyze screenshots, diagrams, photos, and scanned documents directly
GPT-5.2 Chat clearly outperforms GPT-6 Luna (batch) with a significant 50.5-point lead. For most general use cases, GPT-5.2 Chat is the stronger choice. However, GPT-6 Luna (batch) may still excel in niche scenarios.
By Use Case
Best for Quality
GPT-5.2 Chat
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-6 Luna (batch)
98% lower pricing; better value at scale
Best for Reliability
GPT-5.2 Chat
Higher uptime and faster response speeds
Best for Prototyping
GPT-5.2 Chat
Stronger community support and better developer experience
Best for Production
GPT-5.2 Chat
Wider enterprise adoption and proven at scale
by OpenAI
- Choose for Quality - Marginally better benchmark scores; both are excellent
- Choose for Reliability - Higher uptime and faster response speeds
- Choose for Prototyping - Stronger community support and better developer experience
- Choose for Production - Wider enterprise adoption and proven at scale
| Capability | GPT-5.2 Chat | GPT-6 Luna (batch) |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoningdiffers | ||
| Web Search | ||
| Image Output |
GPT-5.2 Chat
OpenAI
GPT-6 Luna (batch)
OpenAI
GPT-6 Luna (batch) saves you $19.56/month
That's 98% cheaper than GPT-5.2 Chat at 1,000 tokens/request and 100 requests/day.
Assumes 60% input / 40% output token ratio per request. Actual costs may vary based on your usage pattern.
| Parameter | GPT-5.2 Chat | GPT-6 Luna (batch) |
|---|---|---|
| Context Window | 128K | 1.1M |
| Max Output Tokens | 32,000 | 128,000 |
| Open Source | No | No |
| Created | Dec 10, 2025 | Sep 22, 2026 |