GPT-6 and GPT-5.6 SVG reasoning-effort comparison

Prices per 1M input/output tokens: GPT-6 Astra $10/$50, Sol $2/$10, Luna $0.10/$0.50. GPT-6 Sol and Luna rates apply to contexts ≤272k; cached input is $0.20/M and $0.01/M respectively. GPT-5.6 Sol $4/$20, Terra $2/$12, Luna $0.20/$1.20.

Effortgpt-6-astragpt-6-solgpt-6-lunagpt-5.6-solgpt-5.6-terragpt-5.6-luna
max
gpt-6-astra, reasoning effort max
16 input tokens, 12,638 output = 63.21 cents
gpt-6-sol, reasoning effort max
16 input tokens, 18,227 output = 18.23 cents
gpt-6-luna, reasoning effort max
16 input tokens, 18,190 output = 0.91 cents
gpt-5.6-sol, reasoning effort max
26 input tokens, 16,180 output = 32.37 cents
gpt-5.6-terra, reasoning effort max
26 input tokens, 21,390 output = 25.67 cents
gpt-5.6-luna, reasoning effort max
16 input tokens, 13,040 output = 1.57 cents
xhigh
gpt-6-astra, reasoning effort xhigh
16 input tokens, 6,766 output = 33.85 cents
gpt-6-sol, reasoning effort xhigh
16 input tokens, 10,561 output = 10.56 cents
gpt-6-luna, reasoning effort xhigh
16 input tokens, 7,900 output = 0.40 cents
gpt-5.6-sol, reasoning effort xhigh
26 input tokens, 8,033 output = 16.08 cents
gpt-5.6-terra, reasoning effort xhigh
26 input tokens, 9,776 output = 11.74 cents
gpt-5.6-luna, reasoning effort xhigh
16 input tokens, 7,072 output = 0.85 cents
high
gpt-6-astra, reasoning effort high
16 input tokens, 3,671 output = 18.37 cents
gpt-6-sol, reasoning effort high
16 input tokens, 4,450 output = 4.45 cents
gpt-6-luna, reasoning effort high
16 input tokens, 4,275 output = 0.21 cents
gpt-5.6-sol, reasoning effort high
26 input tokens, 3,454 output = 6.92 cents
gpt-5.6-terra, reasoning effort high
26 input tokens, 2,486 output = 2.99 cents
gpt-5.6-luna, reasoning effort high
16 input tokens, 4,098 output = 0.49 cents
medium
gpt-6-astra, reasoning effort medium
16 input tokens, 2,560 output = 12.82 cents
gpt-6-sol, reasoning effort medium
16 input tokens, 2,684 output = 2.69 cents
gpt-6-luna, reasoning effort medium
16 input tokens, 2,682 output = 0.13 cents
gpt-5.6-sol, reasoning effort medium
26 input tokens, 3,511 output = 7.03 cents
gpt-5.6-terra, reasoning effort medium
26 input tokens, 2,302 output = 2.77 cents
gpt-5.6-luna, reasoning effort medium
16 input tokens, 2,089 output = 0.25 cents
low
gpt-6-astra, reasoning effort low
16 input tokens, 1,906 output = 9.55 cents
gpt-6-sol, reasoning effort low
16 input tokens, 815 output = 0.82 cents
gpt-6-luna, reasoning effort low
16 input tokens, 1,640 output = 0.08 cents
gpt-5.6-sol, reasoning effort low
26 input tokens, 2,772 output = 5.55 cents
gpt-5.6-terra, reasoning effort low
26 input tokens, 2,312 output = 2.78 cents
gpt-5.6-luna, reasoning effort low
16 input tokens, 1,258 output = 0.15 cents
none Not available
gpt-6-sol, reasoning effort none
16 input tokens, 889 output = 0.89 cents
gpt-6-luna, reasoning effort none
16 input tokens, 1,486 output = 0.07 cents
gpt-5.6-sol, reasoning effort none
26 input tokens, 1,961 output = 3.93 cents
gpt-5.6-terra, reasoning effort none
26 input tokens, 1,731 output = 2.08 cents
gpt-5.6-luna, reasoning effort none
16 input tokens, 1,176 output = 0.14 cents