Claude 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$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 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MPaLM 2 Bison$0.500/MPaLM 2 Unicorn$5.000/MGemma 3 27B$0.270/MGrok 3$6.600/MGrok 2$4.400/MGrok 1.5$8.000/MDeepSeek-V3$0.519/MDeepSeek-V3-0324$0.519/MDeepSeek-R1$1.042/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$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 2.5 Pro$3.875/MGemini 1.5 Pro$2.375/MGemini 1.0 Ultra$12.000/MGemini 1.0 Pro$0.800/MPaLM 2 Bison$0.500/MPaLM 2 Unicorn$5.000/MGemma 3 27B$0.270/MGrok 3$6.600/MGrok 2$4.400/MGrok 1.5$8.000/MDeepSeek-V3$0.519/MDeepSeek-V3-0324$0.519/MDeepSeek-R1$1.042/M

AnthropicMultimodal

Claude Sonnet 4.5

Name: Claude Sonnet 4.5
Brand: Anthropic
Price: 3.000000 USD

Balanced

The Sonnet that established the Claude 4 line as the default mid-tier choice. Still widely deployed where 4.6 hasn't been re-validated.

Released Sep 2025Modalities text, visionOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →

INPUT

$3.000/M

per million input tokens

OUTPUT

$15.000/M

per million output tokens

BLENDED 70/30

$6.600/M

default reference rate

CONTEXT

200K

200,000 tokens

What it's good at

Strong coding for the price
1M context
Solid vision
Wide ecosystem support

Typical use cases

Mid-cost production chat
Existing Sonnet 4.5 pipelines
Document Q&A

Benchmarks

vs. best public score

MMLU85%

Multitask academic knowledge across 57 subjects.

GPQA Diamond73%

Graduate-level science questions, "Google-proof".

MATH86%

High-school competition math problems.

HumanEval91%

Python function synthesis from docstrings.

SWE-bench Verified62%

Real GitHub issues solved end-to-end.

LMArena Elo1340 Elo

Crowd-sourced head-to-head preference Elo rating.

Hand-curated from each provider's published reports and public leaderboards. Methodology varies across sources — treat as directional rather than authoritative.