Data points: 63
Model compare
The readout for Claude Sonnet 4.6 and GPT-5.6 Luna Pro, before the detailed comparison sheet.
Weighted outcome: Claude Sonnet 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Sonnet 4.6
Claude Sonnet 4.6 has the higher weighted result; Model A / B score 100 to 0.
Evidence depth
63 data points
Includes 0 benchmark rows, 0 audit samples, and 5 provider examples.
Selection signal
Start with Claude Sonnet 4.6
The charts below split 5 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-5.6 Luna Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Sonnet 4.6 | GPT-5.6 Luna Pro |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 100.0 pts | 0.0 pts |
| Benchmark category leads | 0 categories | 0 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | No data |
| Context window | 1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Modalities | Input TextImageFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Claude Sonnet 4.6 | GPT-5.6 Luna Pro |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Feb 2026 | Jul 2026 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2026-02-16 |
| OpenRouter ID | anthropic/claude-sonnet-4.6 | openai/gpt-5.6-luna-pro |
| References | No data | No data |
This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-5.6 Luna Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Sonnet 4.6
Claude Sonnet 4.6 has these operational advantages: Cheapest input price, Free providers, Provider coverage.
GPT-5.6 Luna Pro
GPT-5.6 Luna Pro does not clearly lead in the benchmark or operational dimensions shared by both models.
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Claude Sonnet 4.6
53.2
Avg. score
GPT-5.6 Luna Pro
-
Claude Sonnet 4.6
Claude Sonnet 4.6
Claude Sonnet 4.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4.6 | GPT-5.6 Luna Pro |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Sonnet 4.6 | GPT-5.6 Luna Pro |
|---|---|---|
0 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.6 Luna Pro speed / latency N/A / N/A input / output No data |
0 tests | Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency N/A / N/A input / output $0.329/M/$1.64/M | GPT-5.6 Luna Pro gpt-5.6-luna-pro speed / latency N/A / N/A input / output $30.82/M |
0 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.6 Luna Pro speed / latency N/A / N/A input / output No data |
0 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.6 Luna Pro speed / latency N/A / N/A input / output No data |
0 tests | Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency N/A / N/A input / output $1.08/M/$5.41/M | GPT-5.6 Luna Pro openai/gpt-5.6-luna-pro speed / latency N/A / N/A input / output $0.412/M |
Weighted outcome: Claude Sonnet 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
Claude Sonnet 4.6
Claude Sonnet 4.6
No data
Claude Sonnet 4.6
Claude Sonnet 4.6
