✦ Our pick · Production investigation
GPT-5.6 Sol at medium effort, $28.05 per finished task, is the cheapest you can get today. Within our measurement error it ties with Gemini 3.8 Flash and GLM-5.3-Flash: equally good bets, worth trying two.
Updated Oct 13, 2026, every 3 hours. See it live with your plans and costs.
The top 10 for production investigation
Alerts, events and traces across services to find the root cause. 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.
| # | Model | Effort | Success | $/task |
|---|---|---|---|---|
| 1 | GPT-5.6 Sol OpenAI | medium | 56.2% measured | $28.05 |
| 2 | Gemini 3.8 Flash Google | high | 52.5% measured | $29.19 |
| 3 | GLM-5.3-Flash Z AI | default | 51.2% measured | $29.68 |
| 4 | GPT-5.6 Terra OpenAI | max | 57.1% measured | $32.34 |
| 5 | GPT-6.1 Sol OpenAI | high | 50.7% estimated | $33.26 |
| 6 | Grok 4.5 SpaceXAI | high | 50.3% estimated | $33.41 |
| 7 | GPT-6 Sol OpenAI | max | 52.3% measured | $34.57 |
| 8 | DeepSeek V4.1 Flash DeepSeek | max | 46.9% measured | $35.51 |
| 9 | MiMo-V2.6-Pro Xiaomi | default | 46.4% estimated | $36.12 |
| 10 | Ling 3.1 Flash InclusionAI | default | 45.3% estimated | $37.83 |
Best within your tool
| Tool | Model | Effort | $/task |
|---|---|---|---|
| Cursor | Gemini 3.8 Flash | high | $29.19 |
| Claude Code | Claude Sonnet 5.5 | xhigh | $40.34 |
| Codex | GPT-5.6 Sol | medium | $28.05 |
| Antigravity | Gemini 3.8 Flash | high | $29.19 |
| GitHub Copilot | GPT-5.6 Sol | medium | $28.05 |
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).
| Plan | Model | Effort |
|---|---|---|
| Claude Pro | Claude Sonnet 5.5 | xhigh |
| Claude Max | Claude Fable 5.1 | high |
| ChatGPT Plus or Business | GPT-5.6 Sol | medium |
| ChatGPT Pro | GPT-5.6 Sol | medium |
| Google AI Pro | Gemini 3.8 Flash | medium |
| Google AI Ultra | Gemini 3.8 Flash | medium |
Measured on
- ITBench-AA · Artificial Analysis. Root cause of real Kubernetes incidents from alerts, events, traces and topology snapshots, with shell access. Scored as precision at full recall (missing any true cause scores 0). Measured for 20 of the 42 ranked models, results as of Oct 13, 2026.
How every number is worked out, with the errors of our estimates: the method.