Updated every 3 hours

Istari Index

Best AI model for security & vulnerabilities

Find and fix vulnerabilities without breaking the code. Ranked by what a finished task really costs: the tokens, plus your time fixing mistakes.

✦ Our pick · Security & vulnerabilities

GPT-6 Sol at high effort, $16.32 per finished task, is the cheapest you can get today.

Updated Oct 13, 2026, every 3 hours. See it live with your plans and costs.

The top 10 for security & vulnerabilities

Find and fix vulnerabilities without breaking the code. Cost per finished task: the tokens at each model's best effort level for this work, plus your time fixing failed attempts ($93 an hour). Success is the share of such tasks a model gets right the first time, on the benchmarks below.

#ModelEffortSuccess$/task
1GPT-6 Sol OpenAIhigh69.0% measured$16.32
2Gemini 4 Argon Googlehigh67.2% partly measured$17.63
3MiMo-V2.6-Pro Xiaomidefault61.4% measured$19.73
4GPT-5.6 Sol OpenAImedium64.5% partly measured$20.45
5DeepSeek V4.1 Flash DeepSeekmax60.3% measured$20.75
6MiMo-V2.6-Flash Xiaomidefault59.9% partly measured$20.86
7Claude Haiku 5.5 Anthropicmax60.2% partly measured$20.95
8GPT-6 Luna OpenAImax59.8% measured$21.08
9Grok 4.7 SpaceXAIxhigh62.0% measured$21.53
10GPT-5.6 Luna OpenAImax59.1% partly measured$22.11

Best within your tool

ToolModelEffort$/task
CursorClaude Haiku 5.5max$20.95
Claude CodeClaude Haiku 5.5max$20.95
CodexGPT-6 Solhigh$16.32
AntigravityClaude Sonnet 5.5xhigh$23.56
GitHub CopilotGPT-6 Solhigh$16.32

If tokens come with your plan

Tokens included in a plan cost you nothing extra, so the pick is the most reliable model in it, at the leanest effort level within our error of the best (the top levels only use up the plan sooner).

PlanModelEffort
Claude ProClaude Haiku 5.5max
Claude MaxClaude Haiku 5.5max
ChatGPT Plus or BusinessGPT-6 Solxhigh
ChatGPT ProGPT-6 Solxhigh
Google AI ProClaude Sonnet 5.5xhigh
Google AI UltraClaude Sonnet 5.5xhigh

Measured on

How every number is worked out, with the errors of our estimates: the method.

Other kinds of work