claude-opus-5-5 vs gpt-6-sol
Parameters, independent leaderboard coverage, real-task reports and open-weight availability are shown side by side; missing coverage is not a zero.
Parameters
| Comparison item | claude-opus-5-5 | gpt-6-sol |
|---|---|---|
| Model Type | LLM | LLM |
| Context window | 1,000,000 tokens | 1,050,000 tokens |
| Maximum output | 128,000 tokens | 128,000 tokens |
| Input/output modalities | text, image → text | text, image → text |
| Endpoint | anthropic · openai | openai · openai-response |
| Open weights | Unavailable | Unavailable |
| License | Proprietary hosted model | Proprietary hosted model |
Leaderboard coverage
Every independent board covering either model is retained; an em dash means that board has not published a figure for that model.
Real-task reports
claude-opus-5-5
- Claude Opus 5.5 and GPT-6 Sol on one interactive website prompt — Build an interactive website about imaginary planets from a single prompt. Finding: Opus 5.5 took 26 minutes and built a fuller, explorable solar system with more detail, using 16% of the $20 plan's usage; GPT-6 Sol took 10 minutes for three planets and 1% of the $200 plan's usage. Limitation: One prompt judged by the author; the usage shares are meters of two different subscription plans, not API costs.
- Four models build the Eiffel Tower in Three.js — Build the Eiffel Tower in Three.js. Finding: Opus 5.5 cost $8.95 and took 10 minutes; the author preferred its frontend and 3D detailing to GPT-6 Astra's ($7.45, 8 minutes), found GPT-6 Sol ($3.90, 5 minutes) disappointing and Kimi K3 ($4.04, 6 minutes) strong for the price. Limitation: One task judged by eye by the author; the post does not say how the models were run or how the costs were counted.
- Claude Pro, Codex Plus and SuperGrok on the same work at maximum settings — One piece of work run on each $20 subscription; the task itself is shown only in the author's video. Finding: Opus 5.5 used 10% of the weekly limit (115 million tokens) over 2 hours and scored 5/10, behind GPT-6 Sol at 7/10 (29 million tokens, 69 minutes) and Grok 4.7 at 6/10; the author still recommends Claude at $20 for its usage allowance. Limitation: The post does not describe the task, the quality score is the author's own, and the numbers are subscription meters rather than API usage.
- Eight weeks of Claude Code usage re-priced at Opus 5 and Opus 5.5 rates — Price every request from eight weeks of the author's own Claude Code transcripts at Opus 5 and Opus 5.5 list prices. Finding: 97% of the tokens were cache reads, so the same usage came to $2,849 at Opus 5.5 rates against $5,071 at Opus 5 rates — 44% less, rather than the 20% the headline input and output prices suggest. Limitation: It re-prices the same token counts and does not measure whether Opus 5.5 uses more or fewer tokens on the same work; list prices, not subscription billing; the author built the tool that read the transcripts.
gpt-6-sol
- Claude Opus 5.5 and GPT-6 Sol on one interactive website prompt — Build an interactive website about imaginary planets from a single prompt. Finding: GPT-6 Sol took 10 minutes and built three planets, using 1% of the $200 plan's usage; Claude Opus 5.5 took 26 minutes for a fuller, explorable solar system with more detail, using 16% of the $20 plan's usage. The author found the planets surprisingly similar: Sol faster, Opus bigger and more detailed. Limitation: One prompt judged by the author; the usage shares are meters of two different subscription plans, not API costs.
- Four models build the Eiffel Tower in Three.js — Build the Eiffel Tower in Three.js. Finding: GPT-6 Sol was the cheapest and fastest of the four at $3.90 and 5 minutes, but the author found its result a bit disappointing; they preferred Claude Opus 5.5 ($8.95, 10 minutes) and rated Kimi K3 ($4.04, 6 minutes) strong for the price. Limitation: One task judged by eye by the author; the post does not say how the models were run or how the costs were counted.
- Claude Pro, Codex Plus and SuperGrok on the same work at maximum settings — One piece of work run on each $20 subscription; the task itself is shown only in the author's video. Finding: GPT-6 Sol on Codex Plus used 9% of the weekly limit (29 million tokens) over 69 minutes and scored 7/10, the highest of the three plans, against 5/10 for Opus 5.5 and 6/10 for Grok 4.7; the author still recommends Claude at $20 because it yields far more tokens, and puts Codex Plus at about $330 of API usage a month. Limitation: The post does not describe the task, the quality score is the author's own, and the numbers are subscription meters rather than API usage.
- GPT-6 Astra, Sol and Luna on one SVG animation prompt — Generate an SVG animation of a pelican riding a bicycle, shown in H5. Finding: GPT-6 Sol took 4 min 42 s and used 2% of the five-hour quota, against 6 min 3 s and 16% for GPT-6 Astra; the author puts Sol's quota use at an eighth of Astra's and recommends Sol when quota matters. Limitation: One prompt; the quota shares are a subscription meter, not API cost, and the post gives no quality score for Sol.