Contour levels and marginalised probability distribution functions of H₀, Ω_m, Ω_Λ or Ω_DE, and w (from top to bottom) for different cosmological models (in different colours) from time-delay cosmography in MACS 1149 only (r model). The contour levels on the planes represent the 68.3% and 95.4% confidence regions. Uniform priors on the values of all cosmological parameters (H₀ ∈ [20, 120] km s⁻¹ Mpc⁻¹, Ω_m ∈ [0, 1], Ω_Λ or Ω_DE ∈ [0, 1], w ∈ [ − 2, 0]) are considered in our analysis. Final MCMC chains have 2 × 10⁶ samples for each model. The dashed lines indicate models with w = −1, i.e. corresponding to a cosmological constant.