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- Claude Opus 5.5 vs. GPT-6 Sol
AnthropicOpenAILLM matchup
Claude Opus 5.5vs.GPT-6 Sol
Which one is better?
Claude Opus 5.5 performs better than GPT-6 Sol, but costs twice as much.
Claude Opus 5.5
Rank 1
GPT-6 Sol
Rank 13
Claude Opus 5.5
GPT-6 Sol
Claude Opus 5.5
GPT-6 Sol
Claude Opus 5.5
Rank 8 of 785
GPT-6 Sol
Rank 3 of 785
Above 272,000 tokens of context, GPT-6 Sol costs more: $4 input and $15 output per 1M tokens.
Choose Claude Opus 5.5 for
Choose GPT-6 Sol for
No clear advantage
On this page
Where is the difference?
Strengths at a glance
Opus 5.5GPT-6 SolMedian of all ranked models
95 % range: Opus 5.5 121.2 to 138.7, GPT-6 Sol 112.2 to 117.6.
The same values and verdicts as the bars below. In the close-up the net starts at 95 points, just below the weaker model's lowest value; the reference group average is 100.
Opus 5.5 is ahead in 10 of 10 areas, GPT-6 Sol in none.
Opus 5.5 ahead: 10
Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.
Show 4 more areas that do not count toward the overall index
Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.
Claude Opus 5.5 vs. GPT-6 Sol at the same effort
Both models measured at the same reasoning efforts. This shows whether a lead comes from the model or only from more compute.
| Effort | Opus 5.5 | GPT-6 Sol | Gap | Verdict | Test series |
|---|---|---|---|---|---|
| max | 126.1 | 110.5 | 13.1 | Opus 5.5 ahead | 12 |
| Overall index (max vs. max) | 126.1 | 110.5 | 15.6 | Opus 5.5 ahead |
Gap and verdict compare only the Artificial Analysis test series in which both models are measured at that effort. Tied below 3 points, ahead only beyond two standard errors. The single values rest on all test series of each model, so their difference can deviate from the gap.
Which model for which task?
Everyday tasks, translated from the area values above. Each row names the values it rests on.
See for yourself: same task, one attempt
The same prompt for both models. We show the latest attempt without fixes; it does not count toward the overall index.
Claude Opus 5.5

Oct 1, 2026 · 33 s · $0.07
Test details
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- anthropic/claude-opus-5.5
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 3,536 tokens
- Cost of the attempt
- $0.0708
- Response time
- 33.2 s
- API model reported in response
- anthropic/claude-opus-5.5
- Pinned endpoint
- Anthropic | anthropic/claude-opus-5.5-20260921
- Temperature
- Provider default
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
Visually reviewed. This individual test does not establish overall model quality.
GPT-6 Sol

Oct 1, 2026 · 80 s · $0.04
Test details
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- openai/gpt-6-sol
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 4,389 tokens
- Cost of the attempt
- $0.0439
- Response time
- 80.5 s
- API model reported in response
- openai/gpt-6-sol
- Pinned endpoint
- OpenAI | openai/gpt-6-sol-20260922
- Temperature
- Provider default
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
Visually reviewed. This individual test does not establish overall model quality.
SVG short test
SVG short test
One SVG task with the same fixed settings for every model, without hidden thinking.
Prompt
Return only one standalone SVG of a pelican riding a bicycle. Use viewBox="0 0 800 600", simple shapes, two clearly visible wheels and a recognizable pelican with a long beak. At most 30 SVG elements and 1800 characters. No Markdown, explanations, comments, scripts, animation, CSS or external resources.
Claude Opus 5.5
Unavailable in this round
GPT-6 Sol
Unavailable in this round
Claude Opus 5.5 and GPT-6 Sol in the overall index
Every model with a place in the overall index, both models of this matchup highlighted. You can add or hide other models.
Overall index (Gradually Meta-Score v4)
20 of 92 models
4 models in this view are measured at a lower reasoning effort than max in the overall index. Dashed column: lower reasoning effort than the top.
Popularity compared
How often the models are searched for, used and mentioned, on a scale from 0 to 100.
GPT-6 Sol is more popular than Claude Opus 5.5: 73 to 68 out of 100.
Over time
Weekly values from October 18, 2026 to November 7, 2026
Claude Opus 5.5GPT-6 Sol
All data side by side
The better value is bold. For the overall index only when the gap is clear.
| Metric | Claude Opus 5.5 | GPT-6 Sol |
|---|---|---|
| Intelligence | ||
| Overall indexpoints, 100 = reference group average, higher is better | 126.1 | 110.5 |
| Rank | Rank 1 of 92 | Rank 13 of 92 |
| Price per 1M tokens | ||
| Inputwhat you send | $4 | $2above 272,000 tokens: $4 |
| Outputwhat the model writes | $20 | $10above 272,000 tokens: $15 |
| Cost per task (own tests)average of 3 original-protocol tasks both models passed (SVG short test not included) | $0.11 | $0.044 |
| Speed | ||
| Tokens per second | 106 | 111 |
| Popularity | ||
| Popularitysearch, usage and mentions, 0 to 100 | 68Rank 8 of 785 | 73Rank 3 of 785 |
| Technical | ||
| Context windowhow much text the model reads at once | 1 M tokens≈ 1,500 A4 pages | 1.05 M tokens≈ 1,580 A4 pages |
| Knowledge cutoff | June 2026 | Apr 20, 2026 |
| Released | Sep 22, 2026 | Sep 22, 2026 |
| Availability | Active | Active |
| Open weights | no | no |
Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis
Is there a better choice?
Overall index 119.2, rank 7$2 input and $10 output per 1M tokens
Opus 5.5 vs. GPT-6.1 SolOverall index 122.8, rank 4$2 input and $10 output per 1M tokens
Opus 5.5 vs. Claude Sonnet 5.5Shared benchmarks
Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.
A: Claude Opus 5.5B: GPT-6 Sol
Show 54 more benchmarks
More comparisons
Compare Claude Opus 5.5 and GPT-6 Sol with the models people compare them with most often.
Compare another matchup
Predecessor and successor
The most popular comparisons
- 1Claude Opus 5.5 vs. GPT-6 Astra
- 2Claude Opus 5.5 vs. Claude Sonnet 5.5
- 3Claude Opus 5.5 vs. DeepSeek-V4-Pro
- 4Claude Opus 5.5 vs. Kimi K3.1 Pro
- 5Claude Opus 5.5 vs. Gemini 4 Argon
- 6Claude Opus 5.5 vs. Gemini 3.8 Flash
- 7Claude Opus 5.5 vs. Claude Fable 5.1
- 8Claude Opus 5.5 vs. DeepSeek-V4.1-Flash
- 9GPT-6 Sol vs. GPT-5.6 Sol
Show all 78 comparisons
- 10GPT-6 Sol vs. DeepSeek-V4.1-Flash
- 11Claude Opus 5.5 vs. Qwen 3.8 Max 0902
- 12Claude Opus 5.5 vs. GLM-5.3-Flash
- 13Claude Opus 5.5 vs. GPT-6.1 Sol
- 14Claude Opus 5.5 vs. Kimi K3
- 15Claude Opus 5.5 vs. Claude Sonnet 5
- 16Claude Opus 5.5 vs. Claude Haiku 5.5
- 17Claude Opus 5.5 vs. GLM-5.3
- 18GPT-6 Sol vs. Gemini 3.8 Flash
- 19Claude Opus 5.5 vs. GPT-5.6 Terra
- 20Claude Opus 5.5 vs. Gemini 3.1 Pro Preview
- 21Claude Opus 5.5 vs. Claude Opus 4.6
- 22GPT-6 Sol vs. GPT-5.6 Terra
- 23Claude Opus 5.5 vs. Claude Sonnet 4.6
- 24Claude Opus 5.5 vs. Qwen 3.8 27B
- 25GPT-6 Astra vs. GPT-6 Sol
- 26Claude Opus 5.5 vs. Grok 4.6
- 27Claude Opus 5.5 vs. GLM-5.2
- 28Claude Opus 5.5 vs. Gemini 4 Carbon
- 29Claude Opus 5.5 vs. DeepSeek V4.1 Flash 1017
- 30Claude Opus 5.5 vs. Claude Sonnet 4.5
- 31Claude Opus 5.5 vs. Muse Spark 1.3
- 32Claude Opus 5.5 vs. Claude Opus 4.8
- 33Claude Opus 5.5 vs. GPT-5.6 Luna
- 34GPT-6 Sol vs. GLM-5.3-Flash
- 35Claude Sonnet 5.5 vs. GPT-6 Sol
- 36Claude Opus 5.5 vs. Mistral Large 4
- 37Claude Opus 5.5 vs. GPT-5.6 Sol
- 38GPT-6 Sol vs. Gemini 3.1 Pro Preview
- 39Claude Opus 4.8 vs. GPT-6 Sol
- 40Claude Opus 5.5 vs. GPT-5.5
- 41GPT-6 Sol vs. GPT-5.4
- 42GPT-6 Sol vs. DeepSeek V4.1 Flash 1017
- 43Claude Opus 5.5 vs. DeepSeek-V4-Flash
- 44GPT-6 Sol vs. Qwen 3.8 27B
- 45Claude Opus 5.5 vs. Grok 4.7
- 46GPT-6 Sol vs. GPT-6 Luna
- 47GPT-6 Sol vs. Kimi K3.1 Pro
- 48Claude Opus 5.5 vs. Mistral Large 3
- 49Claude Opus 5.5 vs. GPT-6 Luna
- 50Claude Opus 5.5 vs. Claude Opus 4.5
- 51Claude Sonnet 4.6 vs. GPT-6 Sol
- 52Claude Opus 5.5 vs. Claude Fable 5
- 53GPT-6 Sol vs. Grok 4.7
- 54Claude Haiku 5.5 vs. GPT-6 Sol
- 55GPT-6 Sol vs. Qwen 3.8 Max 0902
- 56Claude Sonnet 5 vs. GPT-6 Sol
- 57GPT-6 Sol vs. Kimi K3
- 58Claude Fable 5.1 vs. GPT-6 Sol
- 59Claude Opus 5.5 vs. Gemini 3.6 Flash
- 60GPT-6 Sol vs. DeepSeek-V4-Pro
- 61Claude Opus 5.5 vs. Mistral Medium 3.5
- 62GPT-6 Sol vs. GPT-5.6 Luna
- 63Claude Opus 5.5 vs. Muse Wonder Full
- 64Claude Opus 5 vs. GPT-6 Sol
- 65Claude Opus 5.5 vs. Claude Haiku 4.5
- 66Claude Opus 5.5 vs. Gemini 3.5 Flash
- 67Claude Opus 5.5 vs. GPT-6.1 Terra
- 68GPT-6 Sol vs. Mistral Large 4
- 69GPT-6 Sol vs. Gemini 4 Argon
- 70Claude Opus 5.5 vs. GPT-5.4
- 71Claude Opus 5.5 vs. GLM-5.1
- 72GPT-6 Sol vs. Gemini 3.6 Flash
- 73Claude Opus 4.6 vs. GPT-6 Sol
- 74GPT-6 Sol vs. Muse Wonder
- 75Claude Haiku 4.5 vs. GPT-6 Sol
- 76GPT-6 Sol vs. GPT-5.5
- 77GPT-6.1 Terra vs. GPT-6 Sol
- 78GPT-6 Sol vs. Gemini 4 Carbon