Data points: 50
Model compare
The readout for Claude 2.1 and Claude Opus 4.6, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4.6
Claude Opus 4.6 has the higher weighted result; Model A / B score 0 to 100.
Evidence depth
50 data points
Includes 4 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 11 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 2.1 and Claude Opus 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 2.1 | Claude Opus 4.6 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 0.0 pts | 100.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | No data | Cheapest input price, Free providers, Provider coverage |
| Context window | No data | 1M tokens |
| Max output | No data | 128K tokens |
| Modalities | No data | 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 2.1 | Claude Opus 4.6 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | No data | Feb 2026 |
| Parameters | No data | No data |
| Tokenizer | No data | Claude |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | anthropic/claude-opus-4.6 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 2.1 and Claude Opus 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 2.1
Claude 2.1 does not clearly lead in the benchmark or operational dimensions shared by both models.
Claude Opus 4.6
Claude Opus 4.6 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
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 2.1
36
Avg. score
Claude Opus 4.6
53.4
Claude Opus 4.6
Claude Opus 4.6 leads by 25.3
Claude Opus 4.6 leads by 18.7
Claude Opus 4.6
Claude Opus 4.6 leads by 18.3
Claude Opus 4.6
Claude Opus 4.6
Claude Opus 4.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 2.1
49.5%
Rank #120/125 · confidence 4
Claude Opus 4.6
winner82.0%
Rank #47/125 · confidence 3 · eval date 2026-02-01
Claude 2.1
31.9%
Rank #184/187 · confidence 4
Claude Opus 4.6
winner84.0%
Rank #52/187 · confidence 4
Claude 2.1
4.2%
Rank #153/186 · confidence 4
Claude Opus 4.6
winner18.6%
Rank #61/186 · confidence 4
Claude 2.1
18.4%
Rank #177/184 · confidence 4
Claude Opus 4.6
winner45.7%
Rank #32/184 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 2.1 | Claude Opus 4.6 |
|---|---|---|
| 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 2.1 | Claude Opus 4.6 |
|---|---|---|
5 tests | Claude 2.1 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency 40 tok/s / 3103ms input / output No data |
0 tests | Claude 2.1 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency N/A / N/A input / output No data |
0 tests | Claude 2.1 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency N/A / N/A input / output No data |
0 tests | Claude 2.1 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency N/A / N/A input / output No data |
0 tests | Claude 2.1 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency N/A / N/A input / output No data |
Claude 2.1 claude-2.1 speed / latency No data input / output $0/request | Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $0/request | |
Claude 2.1 claude-2.1 speed / latency No data input / output $9.60/M/$28.80/M | Claude Opus 4.6 claude-opus-4-6-thinking speed / latency No data input / output $6.00/M |
Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
