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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Claude Opus 4.5

Previous

Direct predecessor to Opus 4.6. Strong choice when you need Claude 4 behaviour without changing existing prompts and evals tuned to the 4.5 generation.

Claude Opus 4.5 is a frontier AI model from Anthropic. It costs $15.000 per million input tokens and $75.000 per million output tokens (blended $33.000/M), with a 200K-token context window.

Released Sep 2025Modalities text, visionOfficial model page ↗Provider pricing ↗API docs ↗Compare with another model →Estimate monthly cost →
INPUT
$15.000/M
per million input tokens
OUTPUT
$75.000/M
per million output tokens
BLENDED 70/30
$33.000/M
default reference rate · how it's calculated →
CONTEXT
200K
200,000 tokens
What it's good at
  • 1M-token context
  • Stable for production pipelines
  • Strong agentic coding
  • Tool use & function calling
Typical use cases
  • Coding agents already tuned for 4.5
  • Long-document analysis
  • Stable production traffic
Benchmarks
vs. best public score
MMLU87%
Multitask academic knowledge across 57 subjects.
GPQA Diamond76%
Graduate-level science questions, "Google-proof".
MATH88%
High-school competition math problems.
HumanEval93%
Python function synthesis from docstrings.
SWE-bench Verified68%
Real GitHub issues solved end-to-end.
LMArena Elo1366 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.
More from Anthropic
See all 16 →
Claude Fable 5
Frontier · 1M ctx
in $10.000/Mout $50.000/M
Claude Opus 4.8
Frontier · 1M ctx
in $5.000/Mout $25.000/M
Claude Opus 4.7
Previous · 1M ctx
in $5.000/Mout $25.000/M
Claude Opus 4.6
Previous · 1M ctx
in $5.000/Mout $25.000/M
Claude Sonnet 4.6
Balanced · 1M ctx
in $3.000/Mout $15.000/M
Claude Sonnet 4.5
Balanced · 200K ctx
in $3.000/Mout $15.000/M
Frequently asked questions

How much does Claude Opus 4.5 cost?

Claude Opus 4.5 costs $15.000 per million input tokens and $75.000 per million output tokens, for a blended reference rate of $33.000 per million tokens.

What is Claude Opus 4.5's context window?

Claude Opus 4.5 supports up to 200K tokens of context (200,000 tokens).

What is Claude Opus 4.5 best for?

Claude Opus 4.5 is well suited to 1M-token context, Stable for production pipelines and Strong agentic coding.

Who makes Claude Opus 4.5?

Claude Opus 4.5 is developed and served by Anthropic. It was released in Sep 2025.