Chemprop spectra prediction was benchmarked using gas-phase IR absorbance data provided publicly by NIST. Similarity between the predicted spectra and the target spectra are assessed using Spectral Information Divergence, SID. The benchmark average SID for predictions on the test set was 0.27. Qualitatively, a SID value of 0.27 is a good prediction which generally tends to match the location and magnitude of all major peaks and the location of most minor peaks, while smoothing some of the details of peak shape. To give some context to this value, we also provide some simple baselines for comparison. The average SID of a uniform distribution against the dataset was 2.52. The average SID of a roundrobin pairing of every spectrum in the dataset with every other spectrum in the dataset was 2.89.