Electricity Bench

claude-opus-5 vs gpt-5.6-sol

Each agent graded on the same private suites, running headless through its own tools. Advantages are oriented so a win is a win, whichever way the metric runs.

claude-opus-5Clears tier 2 (partial tier 5) at 11.0% of Claude Max 20x per runCOVERALLgpt-5.6-solClears tier 4 (partial tier 5) at 2.8% of ChatGPT Plus per runCOVERALL
real-world@v3CvsC
Dimensionclaude-opus-5gpt-5.6-solAdvantage
Capability57%60%+3% (gpt-5.6-sol leads)
Median task time3m 57s2m 57s1m 0s faster (gpt-5.6-sol leads)
Approx. task cost$0.010 / task$0.009 / task$0.001 / task lower (gpt-5.6-sol leads)

claude-opus-5: 11.0% of Claude Max 20x (11.0% / 5h) per run. gpt-5.6-sol: 2.8% of ChatGPT Plus (2.8% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.

vibe-coding@v1DvsD
Dimensionclaude-opus-5gpt-5.6-solAdvantage
Capability54%55%+1% (gpt-5.6-sol leads)
Median task time6m 57s3m 32s3m 25s faster (gpt-5.6-sol leads)
Approx. task cost$0.016 / task$0.012 / task$0.004 / task lower (gpt-5.6-sol leads)

claude-opus-5: 1.2% of Claude Max 20x (1.2% / 5h) per good solve. gpt-5.6-sol: 0.3% of ChatGPT Plus (0.3% / 1w) per good solve. Each figure is a share of that agent's own plan, so there is no delta to draw.

Grades and deltas are comparable only within a suite version. See methodology.

Frequently asked questions

Which is better for coding, claude-opus-5 or gpt-5.6-sol?

gpt-5.6-sol clears higher: tier 4 of 5 versus tier 2 for claude-opus-5 on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-08-10.

How much do claude-opus-5 and gpt-5.6-sol cost?

claude-opus-5 runs on Claude Max 20x at $200/month (public price as of 2026-08-05). gpt-5.6-sol runs on ChatGPT Plus at $20/month (public price as of 2026-07-20).