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Did all frontier models fake alignment?

By Nathan Benaich (Air Street Capital) · 2025 report

No. A study summarized in the report found alignment faking in five of 25 models. Only Claude 3 Opus showed consistent goal-oriented reasoning in that comparison.

Did all frontier models fake alignment? - 2025 report, slide 264
Did all frontier models fake alignment?. 2025 report, slide 264 (PDF page 265)

How to read this finding

These results depend on the experimental setup. A compliance difference is not equivalent to consistently demonstrated goal-oriented deception. The study does not estimate the rate of deceptive behavior in ordinary production traffic.

Read the full Safety & security section

Evidence you can use

What the alignment-faking comparison actually found

25-model study summarized in the 2025 report

What the alignment-faking comparison actually found
MeasureReported valueDefinition and source
Models evaluated25Frontier-model comparison2025 report, slide 264 (PDF page 265)
Models showing alignment faking5Training-versus-deployment compliance differences2025 report, slide 264 (PDF page 265)
Consistent goal-oriented reasoningClaude 3 OpusWithin this evaluation2025 report, slide 264 (PDF page 265)

These results depend on the experimental setup. A compliance difference is not equivalent to consistently demonstrated goal-oriented deception. The study does not estimate the rate of deceptive behavior in ordinary production traffic.

Data & methodology Download CSVJSON

Sources and dates

Historical snapshot published October 9, 2025. This web edition was prepared on October 10, 2026 from the online deck and original launch posts. Findings and forecasts retain their original time frame.

  1. 2025 report, slide 26 (PDF page 27)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  2. 2025 report, slide 84 (PDF page 85)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  3. 2025 report, slide 247 (PDF page 248)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  4. 2025 report, slide 254 (PDF page 255)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  5. 2025 report, slide 263 (PDF page 264)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  6. 2025 report, slide 264 (PDF page 265)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  7. 2025 report, slide 265 (PDF page 266)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  8. 2025 report, slide 273 (PDF page 274)Original 2025 report. Slide numbers printed in the deck are one lower than PDF page numbers because the cover is unnumbered.
  9. State of AI Report 2025: online slides
  10. Nathan Benaich: The State of AI Report 2025Air Street Press, October 9, 2025.
  11. Welcome to State of AI Report 2025Original website launch post, October 9, 2025.

Cite this page

Benaich, Nathan. “Did all frontier models fake alignment?.” State of AI Report 2025. Historical report snapshot; web edition prepared 2026-10-10.