Anthropic

Claude 4.1 Opus

Type
language model
Context
200K tokens
Max output
32K
Released
5 August 2025
Knowledge cutoff
March 2025
API string
claude-opus-4-1-20250805

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
Jiekou.AI $13.5 $67.5 31 Jul 2026
NanoGPT $14.994 $75.004 31 Jul 2026
302.AI $15 $75 31 Jul 2026
Abacus.AI $15 $75 31 Jul 2026
Amazon Bedrock $15 $75 2 Aug 2026
Anthropic $15 $75 31 Jul 2026
Helicone $15 $75 31 Jul 2026
LLM Gateway $15 $75 31 Jul 2026
Merge Gateway $15 $75 31 Jul 2026

Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.

The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.

Measurement results

Task set Result Run conditions Measured by
Arena Score, programming 1,473.09 1,468–1,478 — —
Arena Score, long queries 1,445.19 1,440–1,450 — —
Arena Score in Spanish 1,444.59 1,430–1,459 — —
Arena Score, multi-turn dialogue 1,441.82 1,436–1,448 — —
Arena Score, hard prompts 1,441.49 1,438–1,445 — —
Arena Score, instruction following 1,433.82 1,429–1,439 — —
Arena Score in English 1,428.72 1,425–1,433 — —
Arena Score in French 1,427.47 1,410–1,445 — —
Arena Score, expert questions 1,425.18 1,415–1,435 — —
Arena Score in Russian 1,422.37 1,414–1,430 — —
Arena Score, mathematics 1,421.84 1,413–1,430 — —
Arena Score, overall 1,417.42 1,414–1,420 — —
Arena Score, creative writing 1,410.22 1,404–1,416 — —
Arena Score, web development 1,388.74 1,378–1,400 — —
Creative writing (Lech Mazur’s evaluation) 84.7 % — lechmazur/writing Github repository
SWE-bench Verified — fixing bugs in repositories 73.35 % · with a tuned harness Epoch evaluations
GPQA Diamond — graduate-level questions 69.7 % thinking budget: 27K · with a tuned harness Epoch evaluations
Mock AIME 2024–2025 — olympiad problems 68.86 % thinking budget: 27K · with a tuned harness Epoch evaluations
SimpleBench — trick questions 52 % — SimpleBench Leaderboard
DeepResearch Bench — deep research 49.7 % — DeepResearchBench Leaderboard
GDPval — tasks from real occupations 43.6 % — —
WeirdML — unusual machine learning tasks 42.76 % thinking budget: 16K WeirdML Leaderboard
Cybench — cybersecurity tasks 42 % · with a tuned harness Cybench leaderboard
Terminal-Bench — working in the command line 38 % · with a tuned harness Terminal-Bench v2 Leaderboard
SimpleQA Verified — factual accuracy 34.8 % thinking budget: 27K Epoch evaluations
FrontierMath, levels 1–3 12.63 % thinking budget: 32K Epoch evaluations
Humanity’s Last Exam — expert-level questions 7.06 % — —
FrontierMath, level 4 — research-grade problems 2.44 % thinking budget: 32K Epoch evaluations
Chess puzzles 2.15 % — Epoch evaluations