Data points: 62
The readout for Claude Sonnet 4.6 and Gemini 1.5 Flash, before the detailed comparison sheet.
Decision read
Claude Sonnet 4.6
Claude Sonnet 4.6 currently has the stronger profile, with verified wins split 4 to 2.
Evidence depth
62 data points
Includes 3 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Claude Sonnet 4.6
The charts below split 11 high-signal samples across speed, scores, and audit health.
Model compare Claude Sonnet 4.6 vs Gemini 1.5 Flashclaude-sonnet-4-6-vs-gemini-1-5-flash | Model A Claude Sonnet 4.6 | Model B Gemini 1.5 Flash |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Sonnet 4.6 | Gemini 1.5 Flash |
|---|---|---|
| SciCode | 46.9%#16 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4.6 | Gemini 1.5 Flash |
|---|---|---|
| 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 | Gemini 1.5 Flash |
|---|---|---|
25 tests | Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency 32 tok/s / 6074ms input / output $0.411/M / $2.05/M |
This report only uses LMSpeed data for Claude Sonnet 4.6 and Gemini 1.5 Flash: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Sonnet 4.6 | Gemini 1.5 Flash |
|---|---|---|
| When to choose each model | Claude Sonnet 4.6 Claude Sonnet 4.6 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | Gemini 1.5 Flash Gemini 1.5 Flash is stronger when you prioritize Average speed, First-token latency. |
TL;DR: Claude Sonnet 4.6 leads across 62 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Sonnet 4.6 vs Gemini 1.5 Flash into nearby model comparisons with enough verified LMSpeed data.
| Average speed, First-token latency |
| Model metadata | Claude Sonnet 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | Anthropic | |
| Context window | 1M tokens | No data |
| Max output | 128K tokens | No data |
| Released | Feb 2026 | No data |
| Modalities | Input TextImageFile Output Text | No data |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
| Parameters | No data | No data |
| Tokenizer | Claude | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-sonnet-4.6 | No data |
| References | No data | No data |
| GPQA | 79.9%#58 | 46.3%#124 |
|---|
| HLE | 13.2%#58 | 3.5%#100 |
|---|
Gemini 1.5 Flash
models/gemini-1.5-flash
speed / latency
N/A / N/A
input / output
$0.014/M / $0.137/M
V-API15 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | Gemini 1.5 Flash speed / latency 163 tok/s / 1183ms input / output No data |
|---|
丸美小沐15 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | Gemini 1.5 Flash speed / latency 236 tok/s / 1159ms input / output No data |
|---|
Aitoke5 tests | Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency 43 tok/s / 2401ms input / output $0.411/M / $2.05/M | Gemini 1.5 Flash models/gemini-1.5-flash speed / latency N/A / N/A input / output $0.014/M / $0.137/M |
|---|
速创API5 tests | Claude Sonnet 4.6 speed / latency 20 tok/s / 8427ms input / output No data | Gemini 1.5 Flash speed / latency N/A / N/A input / output No data |
|---|
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $0.041/M / $0.205/M | Gemini 1.5 Flash gemini-1.5-flash-latest speed / latency No data input / output $0.0033/M / $0.013/M |
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $0.411/M / $2.05/M | Gemini 1.5 Flash gemini-1.5-flash speed / latency No data input / output $0.096/M / $0.384/M |
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $5.40/M / $27.00/M | Gemini 1.5 Flash gemini-1.5-flash speed / latency No data input / output $0.135/M / $0.540/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
