Anthropic Claude Sonnet Latest vs GPT-5.6 Luna Pro
| Signal | Anthropic Claude Sonnet Latest | Delta | GPT-5.6 Luna Pro |
|---|---|---|---|
Capabilities | 100 | -- | |
Pricing | 90 | -4 | |
Context window size | 86 | 0 | |
Recency | 100 | -- | |
Output Capacity | 85 | -- | |
Benchmarks | 0 | -88 | |
| Overall Result | 0 wins | of 6 | 3 wins |
Score History
40
current score
GPT-5.6 Luna Pro
right now
88.5
current score
Anthropic Claude Sonnet Latest
~anthropic
GPT-5.6 Luna Pro
OpenAI
GPT-5.6 Luna Pro saves you $300.00/month
That's $3600.00/year compared to Anthropic Claude Sonnet Latest at your current usage level of 100K calls/month.
| Metric | Anthropic Claude Sonnet Latest | GPT-5.6 Luna Pro | Winner |
|---|---|---|---|
| Overall Score | 40 | 89 | GPT-5.6 Luna Pro |
| Rank | #203 | #16 | GPT-5.6 Luna Pro |
| Quality Rank | #203 | #16 | GPT-5.6 Luna Pro |
| Adoption Rank | #203 | #16 | GPT-5.6 Luna Pro |
| Parameters | -- | -- | -- |
| Context Window | 1000K | 1050K | GPT-5.6 Luna Pro |
| Pricing | $2.00/$10.00/M | $1.00/$6.00/M | -- |
| Signal Scores | |||
| Capabilities | 100 | 100 | Anthropic Claude Sonnet Latest |
| Pricing | 90 | 94 | GPT-5.6 Luna Pro |
| Context window size | 86 | 86 | GPT-5.6 Luna Pro |
| Recency | 100 | 100 | Anthropic Claude Sonnet Latest |
| Output Capacity | 85 | 85 | Anthropic Claude Sonnet Latest |
| Benchmarks | -- | 88 | GPT-5.6 Luna Pro |
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 40/100 (rank #203), placing it in the top 30% of all 290 models tracked.
Scores 89/100 (rank #16), placing it in the top 95% of all 290 models tracked.
GPT-5.6 Luna Pro has a 49-point advantage, which typically translates to noticeably stronger performance on complex reasoning, code generation, and multi-step tasks.
Choose Anthropic Claude Sonnet Latest when you need:
- Step-by-step reasoning and chain-of-thought problem solving
Choose GPT-5.6 Luna Pro when you need:
- High-volume production workloads where API costs must be minimized
- Step-by-step reasoning and chain-of-thought problem solving
GPT-5.6 Luna Pro offers 42% better value per quality point. At 1M tokens/day, you'd spend $105.00/month with GPT-5.6 Luna Pro vs $180.00/month with Anthropic Claude Sonnet Latest - a $75.00 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-5.6 Luna Pro 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 ($6.00/M) reduces costs when processing thousands of records daily
Creative writing & content
Higher overall composite score (89/100) 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-5.6 Luna Pro clearly outperforms Anthropic Claude Sonnet Latest with a significant 48.5-point lead. For most general use cases, GPT-5.6 Luna Pro is the stronger choice. However, Anthropic Claude Sonnet Latest may still excel in niche scenarios.
By Use Case
Best for Quality
Anthropic Claude Sonnet Latest
Marginally better benchmark scores; both are excellent
Best for Cost
GPT-5.6 Luna Pro
42% lower pricing; better value at scale
Best for Reliability
Anthropic Claude Sonnet Latest
Higher uptime and faster response speeds
Best for Prototyping
Anthropic Claude Sonnet Latest
Stronger community support and better developer experience
Best for Production
Anthropic Claude Sonnet Latest
Wider enterprise adoption and proven at scale
by ~anthropic
- 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 | Anthropic Claude Sonnet Latest | GPT-5.6 Luna Pro |
|---|---|---|
| Vision (Image Input) | ||
| Function Calling | ||
| Streaming | ||
| JSON Mode | ||
| Reasoning | ||
| Web Search | ||
| Image Output |
Anthropic Claude Sonnet Latest
~anthropic
GPT-5.6 Luna Pro
OpenAI
GPT-5.6 Luna Pro saves you $6.60/month
That's 42% cheaper than Anthropic Claude Sonnet Latest 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 | Anthropic Claude Sonnet Latest | GPT-5.6 Luna Pro |
|---|---|---|
| Context Window | 1M | 1.1M |
| Max Output Tokens | 128,000 | 128,000 |
| Open Source | No | No |
| Created | Apr 27, 2026 | Jul 9, 2026 |