LLM Reference

Claude 4 Opus

Released
2025-05-14
Last refreshed
2026-06-16
Status
Researched 17d ago
DeprecatedProprietaryCommercial use: conditionalMultimodalCodingRAGAgentsLong contextVisionClassificationJSON / Tool use

Claude 4 Opus is a legacy integration reference; evaluate Claude Opus 4.8 before starting new work.

Use it for

  • Teams maintaining an existing integration
  • Workloads that can use a 200k context window
  • Buyers comparing 1 tracked provider route

Do not use it for

  • New production launches
Specifications
Family
Claude 4
Released
2025-05-14
Context
200k
Knowledge cutoff
2025-04
Openness
Proprietary
License
ProprietaryCommercial use: conditional
Weights
Not released
Code
Unknown
Created by
AnthropicAnthropic

Developing safe and ethical AI systems.

San Francisco, California, United States
Founded 2021
Website
Pricing
Output / 1M
$75.00
Input / 1M
$15.00

Cheapest of 2 routes · OpenRouter

Providers(2)
OpenRouterAnthropic
View 2 provider routes

This model is deprecated. Anthropic recommends switching to Claude Opus 4.8.

About

Anthropic Claude 4 Opus API snapshot (claude-opus-4-20250514), deprecated April 14, 2026 with Claude API retirement scheduled for June 15, 2026. Use Claude Opus 4.8 for current integrations.

Claude 4 Opus is a proprietary model in the Claude 4 family. The structured metadata tracks a 200k-token context window, multimodal input, function calling, tool use, and structured outputs. This page tracks provider routes through OpenRouter and Anthropic, with the cheapest tracked route listed at $15 input and $75 output per 1M tokens. Headline tracked benchmarks include LiveCodeBench 70.4, Aider Polyglot 72.0, and MMLU PRO 86.0.

Top use-case fit: coding, agents, and build tasks

Coding

3 relevant benchmarks in the decision map.

RAG

Included by capability and metadata signals in the decision map.

Agents

1 relevant benchmark in the decision map.

Provider price ladder

Compare all 2

Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.

ProviderInput / 1MOutput / 1MRoute
OpenRouter$15.00$75.00
Serverless

Available via routers & gateways(14)

LiteLLM

Gateway

Open-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.

Free OSSAnthropic

OpenRouter

Hybrid

Unified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.

PassthroughAnthropic

Portkey

Gateway

Production AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.

SubscriptionAnthropic

AIRouter

Router

Commercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.

Passthrough + feeAnthropic

Helicone

Gateway

Observability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.

SubscriptionAnthropic

Kong AI Gateway

Gateway

Multi-LLM AI gateway built on Kong Gateway 3.x, adding semantic routing, load balancing, guardrails, and MCP traffic analytics as plugins over Kong's existing API management platform.

SubscriptionAnthropic

Capabilities

VisionMultimodalFunction CallingTool UseStructured OutputsFine-tuning

Benchmark peer barsfor Coding

SWE-bench VerifiedRank 53 of 80
Claude Fable 5
96.0
Claude Mythos Preview
93.9
Claude Opus 4.8
88.6
Claude Opus 4.7
87.6
Claude 4 Opuscurrent
72.5
LiveCodeBenchRank 43 of 57
DeepSeek V4 Pro
93.5
Fugu Ultra
93.2
Fugu
92.9
Gemini 3.1 Pro Preview
91.7
Claude 4 Opuscurrent
70.4
Aider PolyglotRank 10 of 33
GPT-5
88.0
GPT-5.5
88.0
o3-pro
84.9
Gemini 2.5 Pro
83.1
Claude 4 Opuscurrent
72.0

Benchmark scores(5)

Scores are benchmark-specific and are direction-aware: the same numeric gap can mean very different outcomes across suites. Use the leaderboard context and this model's provider route to decide whether the winning margin is meaningful for your workload.
BenchmarkScoreVersionSource
LiveCodeBench70.42026-04 (with thinking)https://livecodebench.github.io/performances_generation.json
Aider Polyglot72.02026-04 (32k thinking tokens)https://aider.chat/docs/leaderboards
MMLU PRO86.0—https://huggingface.co/spaces/TIGER-Lab/MMLU-Pro
SWE-bench Verified72.5—https://www.anthropic.com/news/claude-4
Terminal-Bench43.2—https://www.anthropic.com/news/claude-4

Migration checks

No linked migration route is available for this model yet.

Frequently asked questions

What is the context window of Claude 4 Opus?

Claude 4 Opus has a context window of 200k tokens.

How much does Claude 4 Opus cost?

Claude 4 Opus pricing ranges from $15/1M to $15.00/1M input tokens depending on the provider.

When was Claude 4 Opus released?

Claude 4 Opus was released on 2025-05-14.

Which providers offer Claude 4 Opus?

Claude 4 Opus is available from 2 providers: OpenRouter, Anthropic.

What benchmarks has Claude 4 Opus been tested on?

Claude 4 Opus has been evaluated on 5 benchmarks, including LiveCodeBench, Aider Polyglot, MMLU PRO, SWE-bench Verified, Terminal-Bench.