Data points: 194
The readout for Claude Opus 4.6 and GPT-5.5, before the detailed comparison sheet.
Decision read
Claude Opus 4.6
Claude Opus 4.6 currently has the stronger profile, with verified wins split 5 to 1.
Evidence depth
194 data points
Includes 47 benchmark rows, 5 audit samples, and 6 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 58 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.
Model compare Claude Opus 4.6 vs GPT-5.5claude-opus-4-6-vs-gpt-5-5 | Model A Claude Opus 4.6 | Model B GPT-5.5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 5 wins | 1 wins |
| Where it leads | Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests |
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 Opus 4.6
61.6
Avg. score
GPT-5.5
64.9
Selected category
Instruction following
GPT-5.5 leads by 31.3
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Opus 4.6
winner83.0
Rank #8/127 · confidence 4 · eval date 2026-02-01
GPT-5.5
78.0
Rank #17/127 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner2.02 s
Rank #56/139 · confidence 4
GPT-5.5
23.27 s
Rank #99/139 · confidence 4
Claude Opus 4.6
42.2 tok/s
Rank #126/139 · confidence 4
GPT-5.5
winner63.5 tok/s
Rank #94/139 · confidence 4
Claude Opus 4.6
winner2.02 s
Rank #99/139 · confidence 4
GPT-5.5
23.27 s
Rank #127/139 · confidence 4
Claude Opus 4.6
$5.00/M
Rank #151/167 · confidence 4
GPT-5.5
$5.00/M
Rank #151/167 · confidence 4
Claude Opus 4.6
winner$10.00/M
Rank #152/167 · confidence 4
GPT-5.5
$11.25/M
Rank #156/167 · confidence 4
Claude Opus 4.6
winner$25.00/M
Rank #152/167 · confidence 4
GPT-5.5
$30.00/M
Rank #156/167 · confidence 4
Claude Opus 4.6
winner87.8
Rank #2/70 · confidence 4 · eval date 2026-02-01
GPT-5.5
81.9
Rank #9/70 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
84.0%
Rank #51/187 · confidence 4
GPT-5.5
winner93.5%
Rank #3/187 · confidence 4
Claude Opus 4.6
58.3
Rank #59/88 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner74.3
Rank #4/88 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
2.8
Rank #42/72 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner27.1
Rank #5/72 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
18.6%
Rank #60/186 · confidence 4
GPT-5.5
winner44.3%
Rank #7/186 · confidence 4
Claude Opus 4.6
84.1
Rank #3/12 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner84.7
Rank #2/12 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
48.5
Rank #13/86 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner60.6
Rank #2/86 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
57.6
Rank #5/33 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner69.8
Rank #2/33 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
45.7
Rank #34/95 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner56.1
Rank #3/95 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
26.9
Rank #7/8 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner43.0
Rank #3/8 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
45.7%
Rank #31/184 · confidence 4
GPT-5.5
winner56.1%
Rank #4/184 · confidence 4
Claude Opus 4.6
53.4
Rank #30/37 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner58.6
Rank #12/37 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner82.4
Rank #14/100 · confidence 4 · eval date 2026-02-01
GPT-5.5
72.5
Rank #36/100 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
40.7
Rank #10/47 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner51.7
Rank #4/47 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
22.9
Rank #10/35 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner35.4
Rank #6/35 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
54.1
Rank #30/59 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner70.4
Rank #17/59 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
45.2
Rank #14/89 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner56.9
Rank #2/89 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner91.5
Rank #2/92 · confidence 4 · eval date 2026-02-01
GPT-5.5
82.2
Rank #15/92 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
84.0
Rank #51/95 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner93.5
Rank #3/95 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
18.6
Rank #55/95 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner44.3
Rank #4/95 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
37.8
Rank #37/98 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner54.8
Rank #4/98 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
89.2
Rank #15/23 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner93.6
Rank #4/23 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
3.5
Rank #22/28 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner20.1
Rank #7/28 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
40.0
Rank #10/15 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner41.4
Rank #8/15 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
76.0
Rank #47/89 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner85.5
Rank #27/89 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner1337.0
Rank #2/61 · confidence 4 · eval date 2026-02-01
GPT-5.5
1290.0
Rank #19/61 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
77.3
Rank #20/27 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner81.2
Rank #6/27 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
72.5
Rank #36/57 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner79.9
Rank #8/57 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner75.4
Rank #15/81 · confidence 4 · eval date 2026-02-01
GPT-5.5
58.3
Rank #54/81 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
44.6
Rank #62/87 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner75.9
Rank #16/87 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
33.0
Rank #5/21 · confidence 1 · eval date 2026-02-01
GPT-5.5
winner37.7
Rank #2/21 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
79.2
Rank #18/95 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner96.1
Rank #2/95 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
66.6
Rank #8/11 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner81.8
Rank #2/11 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
61.9
Rank #10/50 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner72.9
Rank #2/50 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
36.7
Rank #5/19 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner42.7
Rank #2/19 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
72.7
Rank #10/21 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner78.7
Rank #4/21 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
winner19.9
Rank #4/19 · confidence 4 · eval date 2026-02-01
GPT-5.5
17.0
Rank #12/19 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
65.4
Rank #21/45 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner82.0
Rank #6/45 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
83.7
Rank #9/25 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner84.4
Rank #7/25 · confidence 3 · eval date 2026-04-23
Claude Opus 4.6
84.8
Rank #45/85 · confidence 4 · eval date 2026-02-01
GPT-5.5
winner93.9
Rank #25/85 · confidence 3 · eval date 2026-04-23
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4.6 | GPT-5.5 |
|---|---|---|
Winner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 97 100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Opus 4.6 | GPT-5.5 |
|---|---|---|
25 tests | Claude Opus 4.6 speed / latency 42 tok/s / 2282ms input / output No data |
This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4.6 | GPT-5.5 |
|---|---|---|
| When to choose each model | Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests. | GPT-5.5 GPT-5.5 is stronger when you prioritize First-token latency. |
TL;DR: Claude Opus 4.6 leads across 194 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4.6 vs GPT-5.5 into nearby model comparisons with enough verified LMSpeed data.
| First-token latency |
| Model metadata | Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.5 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Context window | 1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Released | Feb 2026 | Apr 2026 |
| Modalities | Input TextImageFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2025-12-01 |
| OpenRouter ID | anthropic/claude-opus-4.6 | openai/gpt-5.5 |
| References | No data | No data |
GPT-5.5 gpt-5.5 No audit yet |
Yuan APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 89 56100100100 | GPT-5.5 gpt-5.5 No audit yet |
|---|
VSLLMWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 88 6410086100 | GPT-5.5 gpt-5.5 Audit score 87 848480100 |
|---|
钠 APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 80 668470100 | GPT-5.5 gpt-5.5 Audit score 74 72727279 |
|---|
Omini ApiWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 78 70728088 | GPT-5.5 gpt-5.5-openai-compact No audit yet |
|---|
GPT-5.5
speed / latency
59 tok/s / 3856ms
input / output
No data
Kunkunout API20 tests | Claude Opus 4.6 speed / latency 40 tok/s / 16141ms input / output No data | GPT-5.5 speed / latency N/A / N/A input / output No data |
|---|
Rnglg2 API15 tests | Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data | GPT-5.5 speed / latency N/A / N/A input / output No data |
|---|
ModelPool10 tests | Claude Opus 4.6 speed / latency 84 tok/s / 3916ms input / output No data | GPT-5.5 speed / latency N/A / N/A input / output No data |
|---|
6i2 API5 tests | Claude Opus 4.6 speed / latency 280 tok/s / 3242ms input / output No data | GPT-5.5 speed / latency N/A / N/A input / output No data |
|---|
Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $5.47/M/$27.38/M | GPT-5.5 gpt-5.5-openai-compact speed / latency No data input / output $0/M/$0/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
