Claude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MClaude Fable 5$22.000/MClaude Opus 4.8$11.000/MClaude Opus 4.7$11.000/MClaude Opus 4.6$11.000/MClaude Opus 4.5$33.000/MClaude Sonnet 3.7$6.600/MClaude Opus 3$33.000/MClaude 2.1$12.800/MClaude 2$12.800/MGPT-5.5$12.500/MGPT-5.2$5.425/MGPT-5.2-Codex$5.425/MGPT-5$3.875/MGPT-4.5$97.500/MGPT-4 Turbo Preview$16.000/MGPT-4$39.000/MGPT-4-32k$78.000/Mo3$19.000/Mo3-mini$2.090/Mo4-mini$2.090/Mo1$28.500/Mo1-mini$5.700/Mo1-preview$28.500/MGemini 3.5 Pro$5.000/MGemini 3.1 Pro$5.000/MGemini 3 Pro$5.000/MGemini 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/M
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xAIFrontierRETIRED

Grok 1.5

Legacy

Original 2024 Grok 1.5 release. Retired — listed for historical pricing reference only.

Grok 1.5 is a frontier AI model from xAI. It costs $5.000 per million input tokens and $15.000 per million output tokens (blended $8.000/M), with a 128K-token context window.

Official model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$5.000/M
per million input tokens
OUTPUT
$15.000/M
per million output tokens
BLENDED 70/30
$8.000/M
default reference rate · how it's calculated →
CONTEXT
128K
128,000 tokens
Benchmarks
No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.
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Grok 4.3
Frontier · 1M ctx
in $1.250/Mout $2.500/M
Grok 4
Previous · 256K ctx
in $3.000/Mout $15.000/M
Grok 3
Frontier · 131K ctx
in $3.000/Mout $15.000/M
Grok 3 mini
Efficient · 131K ctx
in $0.300/Mout $0.500/M
Grok 3 Fast
Balanced · 131K ctx
in $5.000/Mout $25.000/M
Grok 2
Previous · 131K ctx
in $2.000/Mout $10.000/M
Frequently asked questions

How much does Grok 1.5 cost?

Grok 1.5 costs $5.000 per million input tokens and $15.000 per million output tokens, for a blended reference rate of $8.000 per million tokens.

What is Grok 1.5's context window?

Grok 1.5 supports up to 128K tokens of context (128,000 tokens).

What is Grok 1.5 best for?

Original 2024 Grok 1.5 release. Retired — listed for historical pricing reference only.

Who makes Grok 1.5?

Grok 1.5 is developed and served by xAI.