Head-to-head AI model comparison graphic: Claude Sonnet 5.5 (Anthropic) vs GPT-6 Sol (OpenAI). Intelligence index 54.5 vs 44.2; output speed 136 vs 127 tokens per second; time to first token 6.5 min vs 91s; output price $10.00 vs $10.00 per million tokens; input price $2.00 vs $2.00 per million tokens. franklineh.com
Claude Sonnet 5.5 vs GPT-6 Sol: head-to-head AI benchmark comparison. Claude Sonnet 5.5 leads on intelligence index and output speed; GPT-6 Sol leads on time to first token; level on output price and input price.
Head to headBy Franklin AIUpdated

Claude Sonnet 5.5 Max vs GPT-6 Sol Max compared

Claude Sonnet 5.5 Max leads the intelligence index 54.5 to 44.2. Benchmarks, sample bills, speed and a verdict.

Pick it for Claude Sonnet 5.5 · Max, Default Fallback

  • Higher intelligence index: 54.5 against 44.2.

Pick it for GPT-6 Sol · Max

  • Shorter wait for the first token: 91 seconds against 6.5 minutes.

By the numbers

MetricClaude Sonnet 5.5 (Max, Default Fallback)GPT-6 Sol (Max)
Intelligence Index54.544.2
Input price (per 1M tokens)$2.00$2.00
Output price (per 1M tokens)$10.00$10.00
Output speed (tokens/s)136127
Time to first token6.5 min91s
Release date2026-09-282026-09-22

Claude Sonnet 5.5 (Max, Default Fallback) (Anthropic) and GPT-6 Sol (Max) (OpenAI) meet here on their recorded benchmark, price and speed data. The headline gap is on the intelligence index, where Claude Sonnet 5.5 Max scores 54.5 and GPT-6 Sol Max 44.2. All numbers are the catalogue's recorded values; nobody ran either model by hand for this page.

Reasoning and overall scores

Claude Sonnet 5.5 Max records 54.5 on the intelligence index and GPT-6 Sol Max records 44.2. That is a wide gap for an aggregate score.

Among 109 active scored models, Claude Sonnet 5.5 Max sits 9th and GPT-6 Sol Max 26th.

Specialist coding and math indexes are missing for both, so treat the overall score as the only capability signal here.

Generation gap

Claude Sonnet 5.5 Max arrived on September 28, 2026, 6 days after GPT-6 Sol Max (September 22, 2026). That is close enough to count them as the same generation.

How fast they respond

Measured output speed is 136 tokens per second for Claude Sonnet 5.5 Max and 127 tokens per second for GPT-6 Sol Max. There is little to choose between them on raw output speed. Time to first token is 6.5 minutes for Claude Sonnet 5.5 Max and 91 seconds for GPT-6 Sol Max. GPT-6 Sol Max gets to its first token 4.3 times as fast. A first-token wait of that length suits background work better than live conversation.

Add the two numbers up for an 800-token reply and GPT-6 Sol Max finishes first: 6.6 minutes for Claude Sonnet 5.5 Max, 97 seconds for GPT-6 Sol Max.

Pricing: no difference

Claude Sonnet 5.5 Max lists $2.00 per million input tokens and $10.00 per million output tokens; GPT-6 Sol Max lists $2.00 and $10.00. The rates are identical, so price will not separate them.

Value for money

Dividing the blended price by the intelligence index gives a rough cost per point: $0.073 for Claude Sonnet 5.5 Max and $0.090 for GPT-6 Sol Max, per million tokens. Claude Sonnet 5.5 Max scores higher and costs less per point, so on price per point there is nothing to trade off.

Quick answers

Is GPT-6 Sol Max better than Claude Sonnet 5.5 Max?

Neither wins everywhere: Claude Sonnet 5.5 Max scores higher on the intelligence index, 54.5 to 44.2; their blended prices are about the same; and GPT-6 Sol Max reaches its first token sooner.

Which is cheaper, Claude Sonnet 5.5 Max or GPT-6 Sol Max?

They cost about the same. Claude Sonnet 5.5 Max lists $2.00 in and $10.00 out per million tokens, and GPT-6 Sol Max lists $2.00 and $10.00.

Was this comparison tested by hand?

The figures are the recorded benchmark, price and speed data in Franklin AI's model catalogue. This page is written from that data automatically; neither model was tested by hand for it.

When were Claude Sonnet 5.5 Max and GPT-6 Sol Max released?

Claude Sonnet 5.5 Max is newer. It was released on September 28, 2026, 6 days after GPT-6 Sol Max (September 22, 2026).

Who makes Claude Sonnet 5.5 Max and GPT-6 Sol Max?

Claude Sonnet 5.5 Max is made by Anthropic and GPT-6 Sol Max by OpenAI. Claude Sonnet 5.5 Max was released on September 28, 2026 and GPT-6 Sol Max on September 22, 2026.

Final whistle

Bottom line: Claude Sonnet 5.5 Max is the stronger all-round pick on this data, while GPT-6 Sol Max makes sense in narrower cases. Pick Claude Sonnet 5.5 Max if you need the higher overall score (54.5 against 44.2). Pick GPT-6 Sol Max if users are waiting on the first word.

Where the numbers come from

The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the Claude Sonnet 5.5 (Max, Default Fallback) and GPT-6 Sol (Max) pages. The AI Benchmark methodology explains how that data is collected and shown.

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