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Claude Opus 5 Legacy

Anthropic Language models July 2026

Claude Opus 5 is a model from Anthropic, listed under Language models. It was released in July 2026. It costs $5.00 per million input tokens and $25.00 per million output tokens. It costs less than 20% of the 87 available models in its category. It accepts up to 1M tokens per request. Anthropic points to Claude Opus 5.5 as its replacement. Prices as of Oct 22, 2026, from the provider's official pricing page.

Still available, but superseded by a newer model.

Recommended replacement: Claude Opus 5.5

Add to favourites Cost calculator Documentation Official pricing
Headline price
$10.00 / 1M tokens
Input
$5.00 per 1M tokens
Output
$25.00 per 1M tokens
Context window
1M tokens
Max output
128k

Overview

Anthropic's flagship for difficult, multi-file engineering and deep reasoning. Thinking is on by default. Leads SWE-bench Verified. A 1M-token context window at standard pricing, with no long-context premium.

  • Agentic coding
  • Large refactors
  • Code review
  • Long-horizon autonomous work

Current prices

ItemPrice
Input $5.00 / 1M tokens
Output $25.00 / 1M tokens
Cached input $0.50 / 1M tokens
Cache write $6.25 / 1M tokens

Checked against the provider page on Oct 22, 2026.

Price history

No price change recorded for this model yet.

How it compares

Price among Language modelsEvery available model in Language models with a comparable price. Further right costs more. Logarithmic scale: each step is ten times the last.
$0.3$1$3$10$30$100GPT-5 nano: $0.1375 / 1M tokensDeepSeek V4 Flash 0731: $0.1488 / 1M tokensGemini 2.5 Flash-Lite: $0.175 / 1M tokensGPT-4.1 nano: $0.175 / 1M tokensClaude Haiku 5.5: $0.20 / 1M tokensGPT-6 Luna: $0.20 / 1M tokensGPT-6 Luna Pro: $0.20 / 1M tokensGPT-4o Mini: $0.2625 / 1M tokensDeepSeek V4 Flash Vision Exp: $0.3234 / 1M tokensGPT-5.6 Luna: $0.45 / 1M tokensGPT-5.4 nano: $0.4625 / 1M tokensDeepSeek V4.1 Flash: $0.525 / 1M tokensGemini 3.1 Flash-Lite: $0.5625 / 1M tokensGPT-5 Mini: $0.6875 / 1M tokensGPT-4.1 Mini: $0.70 / 1M tokensMistral Large 4: $0.75 / 1M tokensGPT-3.5 Turbo: $0.75 / 1M tokensQwen3.8 27B: $0.775 / 1M tokensGemini 3.5 Flash-Lite: $0.85 / 1M tokensGemini 2.5 Flash: $0.85 / 1M tokensGemini 3 Flash: $1.13 / 1M tokensGrok Build 0.1: $1.25 / 1M tokensGemini 3.8 Flash: $1.50 / 1M tokensGemini 3.7 Flash: $1.50 / 1M tokensGemini 3.6 Flash: $1.50 / 1M tokensGrok 4.3: $1.56 / 1M tokensGrok 4.20 Reasoning: $1.56 / 1M tokensGrok 4.20 Non-Reasoning: $1.56 / 1M tokensGrok 4.20 Multi-Agent: $1.56 / 1M tokensGPT-5.4 Mini: $1.69 / 1M tokenso3-mini: $1.93 / 1M tokenso4-mini: $1.93 / 1M tokensDeepSeek V4 Pro: $1.98 / 1M tokensGPT-6.1 Terra: $2.00 / 1M tokensGPT-6.1 Terra Pro: $2.00 / 1M tokensClaude Haiku 4.5: $2.00 / 1M tokensGrok 4.7: $3.00 / 1M tokensQwen3.8 2.4T A95B: $3.00 / 1M tokensGrok 4.6: $3.00 / 1M tokensGrok 4.5: $3.00 / 1M tokensGemini Omni Flash: $3.38 / 1M tokensGPT-5: $3.44 / 1M tokensGemini 2.5 Pro: $3.44 / 1M tokensGPT-5.1: $3.44 / 1M tokenso3: $3.50 / 1M tokensGPT-4.1: $3.50 / 1M tokensClaude Sonnet 5.5: $4.00 / 1M tokensGPT-6.1 Sol: $4.00 / 1M tokensGemini 4 Argon: $4.00 / 1M tokensGPT-6 Sol: $4.00 / 1M tokensGPT-6 Sol Pro: $4.00 / 1M tokensGPT-6.1 Sol Pro: $4.00 / 1M tokensKimi K3.1 Pro: $4.00 / 1M tokensClaude Sonnet 5: $4.00 / 1M tokensGPT-4o: $4.38 / 1M tokensGPT-5.6 Terra: $4.50 / 1M tokensGemini 3.1 Pro: $4.50 / 1M tokensGPT-5.2: $4.81 / 1M tokensGPT-5.3-Codex: $4.81 / 1M tokensGPT-5.4: $5.63 / 1M tokensQwen3.8 Max Prime: $6.00 / 1M tokensClaude Sonnet 4.6: $6.00 / 1M tokensClaude Sonnet 4.5: $6.00 / 1M tokensClaude Opus 5.5: $8.00 / 1M tokensGPT-5.6 Sol: $8.00 / 1M tokensClaude Opus 4.8: $10.00 / 1M tokensClaude Opus 4.7: $10.00 / 1M tokensClaude Opus 4.6: $10.00 / 1M tokensClaude Opus 4.5: $10.00 / 1M tokensChat Latest: $11.25 / 1M tokensGPT-5.5: $11.25 / 1M tokensGPT-4 Turbo: $15.00 / 1M tokensClaude Fable 5.1: $20.00 / 1M tokensGPT-6 Astra: $20.00 / 1M tokensClaude Mythos 5.1: $20.00 / 1M tokensGPT-6 Astra Pro: $20.00 / 1M tokensClaude Fable 5: $20.00 / 1M tokensClaude Mythos 5: $20.00 / 1M tokenso1: $26.25 / 1M tokenso3-pro: $35.00 / 1M tokensGPT-4: $37.50 / 1M tokensGPT-5 Pro: $41.25 / 1M tokensGPT-5.2 Pro: $57.75 / 1M tokensGPT-5.4 Pro: $67.50 / 1M tokensGPT-5.5 Pro: $67.50 / 1M tokenso1-pro: $263 / 1M tokensClaude Opus 5: $10.00 / 1M tokens$10.00 / 1M tokens
Show data
ModelValue
GPT-5 nano$0.1375 / 1M tokens
DeepSeek V4 Flash 0731$0.1488 / 1M tokens
Gemini 2.5 Flash-Lite$0.175 / 1M tokens
GPT-4.1 nano$0.175 / 1M tokens
Claude Haiku 5.5$0.20 / 1M tokens
GPT-6 Luna$0.20 / 1M tokens
GPT-6 Luna Pro$0.20 / 1M tokens
GPT-4o Mini$0.2625 / 1M tokens
DeepSeek V4 Flash Vision Exp$0.3234 / 1M tokens
GPT-5.6 Luna$0.45 / 1M tokens
GPT-5.4 nano$0.4625 / 1M tokens
DeepSeek V4.1 Flash$0.525 / 1M tokens
Gemini 3.1 Flash-Lite$0.5625 / 1M tokens
GPT-5 Mini$0.6875 / 1M tokens
GPT-4.1 Mini$0.70 / 1M tokens
Mistral Large 4$0.75 / 1M tokens
GPT-3.5 Turbo$0.75 / 1M tokens
Qwen3.8 27B$0.775 / 1M tokens
Gemini 3.5 Flash-Lite$0.85 / 1M tokens
Gemini 2.5 Flash$0.85 / 1M tokens
Gemini 3 Flash$1.13 / 1M tokens
Grok Build 0.1$1.25 / 1M tokens
Gemini 3.8 Flash$1.50 / 1M tokens
Gemini 3.7 Flash$1.50 / 1M tokens
Gemini 3.6 Flash$1.50 / 1M tokens
Grok 4.3$1.56 / 1M tokens
Grok 4.20 Reasoning$1.56 / 1M tokens
Grok 4.20 Non-Reasoning$1.56 / 1M tokens
Grok 4.20 Multi-Agent$1.56 / 1M tokens
GPT-5.4 Mini$1.69 / 1M tokens
o3-mini$1.93 / 1M tokens
o4-mini$1.93 / 1M tokens
DeepSeek V4 Pro$1.98 / 1M tokens
GPT-6.1 Terra$2.00 / 1M tokens
GPT-6.1 Terra Pro$2.00 / 1M tokens
Claude Haiku 4.5$2.00 / 1M tokens
Grok 4.7$3.00 / 1M tokens
Qwen3.8 2.4T A95B$3.00 / 1M tokens
Grok 4.6$3.00 / 1M tokens
Grok 4.5$3.00 / 1M tokens
Gemini Omni Flash$3.38 / 1M tokens
GPT-5$3.44 / 1M tokens
Gemini 2.5 Pro$3.44 / 1M tokens
GPT-5.1$3.44 / 1M tokens
o3$3.50 / 1M tokens
GPT-4.1$3.50 / 1M tokens
Claude Sonnet 5.5$4.00 / 1M tokens
GPT-6.1 Sol$4.00 / 1M tokens
Gemini 4 Argon$4.00 / 1M tokens
GPT-6 Sol$4.00 / 1M tokens
GPT-6 Sol Pro$4.00 / 1M tokens
GPT-6.1 Sol Pro$4.00 / 1M tokens
Kimi K3.1 Pro$4.00 / 1M tokens
Claude Sonnet 5$4.00 / 1M tokens
GPT-4o$4.38 / 1M tokens
GPT-5.6 Terra$4.50 / 1M tokens
Gemini 3.1 Pro$4.50 / 1M tokens
GPT-5.2$4.81 / 1M tokens
GPT-5.3-Codex$4.81 / 1M tokens
GPT-5.4$5.63 / 1M tokens
Qwen3.8 Max Prime$6.00 / 1M tokens
Claude Sonnet 4.6$6.00 / 1M tokens
Claude Sonnet 4.5$6.00 / 1M tokens
Claude Opus 5.5$8.00 / 1M tokens
GPT-5.6 Sol$8.00 / 1M tokens
Claude Opus 4.8$10.00 / 1M tokens
Claude Opus 4.7$10.00 / 1M tokens
Claude Opus 4.6$10.00 / 1M tokens
Claude Opus 4.5$10.00 / 1M tokens
Chat Latest$11.25 / 1M tokens
GPT-5.5$11.25 / 1M tokens
GPT-4 Turbo$15.00 / 1M tokens
Claude Fable 5.1$20.00 / 1M tokens
GPT-6 Astra$20.00 / 1M tokens
Claude Mythos 5.1$20.00 / 1M tokens
GPT-6 Astra Pro$20.00 / 1M tokens
Claude Fable 5$20.00 / 1M tokens
Claude Mythos 5$20.00 / 1M tokens
o1$26.25 / 1M tokens
o3-pro$35.00 / 1M tokens
GPT-4$37.50 / 1M tokens
GPT-5 Pro$41.25 / 1M tokens
GPT-5.2 Pro$57.75 / 1M tokens
GPT-5.4 Pro$67.50 / 1M tokens
GPT-5.5 Pro$67.50 / 1M tokens
o1-pro$263 / 1M tokens
Claude Opus 5$10.00 / 1M tokens
Context windowTokens per request. Further right holds more. Logarithmic scale: each step is ten times the last.
10k30k100k300k1MGPT-6 Astra: 1.05MGPT-6.1 Sol: 1.05MGPT-6 Luna: 1.05MGPT-6 Sol: 1.05MGPT-5.6 Sol: 1.05MGPT-5.6 Terra: 1.05MGPT-5.6 Luna: 1.05MGPT-6 Astra Pro: 1.05MGPT-6 Luna Pro: 1.05MGPT-6 Sol Pro: 1.05MGPT-6.1 Sol Pro: 1.05MGPT-6.1 Terra: 1.05MGPT-6.1 Terra Pro: 1.05MGPT-5.4: 1.05MGPT-5.4 Pro: 1.05MGPT-5.5: 1.05MGPT-5.5 Pro: 1.05MGemini 4 Argon: 1.05MGemini 3.8 Flash: 1.05MGemini Omni Flash: 1.05MMuse Wonder: 1.05MGemini 3.5 Flash-Lite: 1.05MGemini 3.7 Flash: 1.05MDeepSeek V4 Flash 0731: 1.05MMuse Spark 1.3: 1.05MKimi K3.1 Pro: 1.05MQwen3.8 2.4T A95B: 1.05MGemini 3.1 Pro: 1.05MDeepSeek V4 Flash Vision Exp: 1.05MGemini 3.6 Flash: 1.05MGemini 3.1 Flash-Lite: 1.05MGemini 3 Flash: 1.05MGemini 2.5 Pro: 1.05MGemini 2.5 Flash: 1.05MGemini 2.5 Flash-Lite: 1.05MMuse Spark 1.1: 1.05MMuse Spark 1.2: 1.05MGPT-4.1: 1.05MGPT-4.1 Mini: 1.05MGPT-4.1 nano: 1.05MClaude Fable 5.1: 1MClaude Opus 5.5: 1MClaude Sonnet 5.5: 1MClaude Haiku 5.5: 1MGrok 4.3: 1MDeepSeek V4 Pro: 1MDeepSeek V4.1 Flash: 1MKimi K3: 1MClaude Mythos 5.1: 1MGrok 4.20 Reasoning: 1MGrok 4.20 Non-Reasoning: 1MGrok 4.20 Multi-Agent: 1MZ.ai GLM 5.3 (on Mistral): 1MQwen3.8 27B: 1MQwen3.8 Max Prime: 1MMistral Large 4: 1MClaude Fable 5: 1MClaude Mythos 5: 1MClaude Sonnet 5: 1MClaude Opus 4.8: 1MClaude Opus 4.7: 1MClaude Opus 4.6: 1MClaude Sonnet 4.6: 1MGrok 4.7: 500kGrok 4.6: 500kGrok 4.5: 500kGPT-5.6 Cyber: 400kChat Latest: 400kGPT-5: 400kGPT-5 Mini: 400kGPT-5 nano: 400kGPT-5 Pro: 400kGPT-5.2: 400kGPT-5.2 Pro: 400kGPT-5.4 Mini: 400kGPT-5-Codex: 400kGPT-5.1: 400kGPT-5.1-Codex: 400kGPT-5.1-Codex Mini: 400kGPT-5.1-Codex-Max: 400kGPT-5.2-Codex: 400kGPT-5.3-Codex: 400kGPT-5.4 nano: 400kGrok Build 0.1: 256kMistral Medium 3.5: 256kMistral Small 4: 256kMinistral 3 14B: 256kMinistral 3 8B: 256kMinistral 3 3B: 256kCommand A: 256kCommand A Reasoning: 256kNorth Mini Code: 256kKimi K2.7 Code: 256kMistral Large 3: 256kKimi K2.6: 256kClaude Opus 4.5: 200kClaude Haiku 4.5: 200ko3: 200ko3-pro: 200kClaude Sonnet 4.5: 200kcodex-mini-latest: 200ko1: 200ko1-pro: 200ko3-deep-research: 200ko3-mini: 200ko4-mini: 200ko4-mini-deep-research: 200kgpt-oss-120b: 131kgpt-oss-20b: 131kCommand A+: 128kCodestral: 128kAya Expanse 32B: 128kCommand A Vision: 128kCommand R7B: 128kCommand R (08-2024): 128kCommand R+ (08-2024): 128kChatGPT-4o: 128kGPT-4 Turbo: 128kGPT-4 Turbo Preview: 128kGPT-4.5 Preview: 128kGPT-4o: 128kGPT-4o Mini: 128kGPT-4o Mini Search Preview: 128kGPT-4o Search Preview: 128kGPT-5 Chat: 128kGPT-5.1 Chat: 128kGPT-5.2 Chat: 128kGPT-5.3 Chat: 128ko1 Preview: 128ko1-mini: 128kCommand R: 128kCommand R+: 128kVoxtral Small: 32kGPT-3.5 Turbo: 16kbabbage-002: 16kdavinci-002: 16kAya Vision 32B: 16kcomputer-use-preview: 8kGPT-4: 8kTiny Aya Earth: 8kTiny Aya Global: 8kClaude Opus 5: 1M1M
Show data
ModelValue
GPT-6 Astra1.05M
GPT-6.1 Sol1.05M
GPT-6 Luna1.05M
GPT-6 Sol1.05M
GPT-5.6 Sol1.05M
GPT-5.6 Terra1.05M
GPT-5.6 Luna1.05M
GPT-6 Astra Pro1.05M
GPT-6 Luna Pro1.05M
GPT-6 Sol Pro1.05M
GPT-6.1 Sol Pro1.05M
GPT-6.1 Terra1.05M
GPT-6.1 Terra Pro1.05M
GPT-5.41.05M
GPT-5.4 Pro1.05M
GPT-5.51.05M
GPT-5.5 Pro1.05M
Gemini 4 Argon1.05M
Gemini 3.8 Flash1.05M
Gemini Omni Flash1.05M
Muse Wonder1.05M
Gemini 3.5 Flash-Lite1.05M
Gemini 3.7 Flash1.05M
DeepSeek V4 Flash 07311.05M
Muse Spark 1.31.05M
Kimi K3.1 Pro1.05M
Qwen3.8 2.4T A95B1.05M
Gemini 3.1 Pro1.05M
DeepSeek V4 Flash Vision Exp1.05M
Gemini 3.6 Flash1.05M
Gemini 3.1 Flash-Lite1.05M
Gemini 3 Flash1.05M
Gemini 2.5 Pro1.05M
Gemini 2.5 Flash1.05M
Gemini 2.5 Flash-Lite1.05M
Muse Spark 1.11.05M
Muse Spark 1.21.05M
GPT-4.11.05M
GPT-4.1 Mini1.05M
GPT-4.1 nano1.05M
Claude Fable 5.11M
Claude Opus 5.51M
Claude Sonnet 5.51M
Claude Haiku 5.51M
Grok 4.31M
DeepSeek V4 Pro1M
DeepSeek V4.1 Flash1M
Kimi K31M
Claude Mythos 5.11M
Grok 4.20 Reasoning1M
Grok 4.20 Non-Reasoning1M
Grok 4.20 Multi-Agent1M
Z.ai GLM 5.3 (on Mistral)1M
Qwen3.8 27B1M
Qwen3.8 Max Prime1M
Mistral Large 41M
Claude Fable 51M
Claude Mythos 51M
Claude Sonnet 51M
Claude Opus 4.81M
Claude Opus 4.71M
Claude Opus 4.61M
Claude Sonnet 4.61M
Grok 4.7500k
Grok 4.6500k
Grok 4.5500k
GPT-5.6 Cyber400k
Chat Latest400k
GPT-5400k
GPT-5 Mini400k
GPT-5 nano400k
GPT-5 Pro400k
GPT-5.2400k
GPT-5.2 Pro400k
GPT-5.4 Mini400k
GPT-5-Codex400k
GPT-5.1400k
GPT-5.1-Codex400k
GPT-5.1-Codex Mini400k
GPT-5.1-Codex-Max400k
GPT-5.2-Codex400k
GPT-5.3-Codex400k
GPT-5.4 nano400k
Grok Build 0.1256k
Mistral Medium 3.5256k
Mistral Small 4256k
Ministral 3 14B256k
Ministral 3 8B256k
Ministral 3 3B256k
Command A256k
Command A Reasoning256k
North Mini Code256k
Kimi K2.7 Code256k
Mistral Large 3256k
Kimi K2.6256k
Claude Opus 4.5200k
Claude Haiku 4.5200k
o3200k
o3-pro200k
Claude Sonnet 4.5200k
codex-mini-latest200k
o1200k
o1-pro200k
o3-deep-research200k
o3-mini200k
o4-mini200k
o4-mini-deep-research200k
gpt-oss-120b131k
gpt-oss-20b131k
Command A+128k
Codestral128k
Aya Expanse 32B128k
Command A Vision128k
Command R7B128k
Command R (08-2024)128k
Command R+ (08-2024)128k
ChatGPT-4o128k
GPT-4 Turbo128k
GPT-4 Turbo Preview128k
GPT-4.5 Preview128k
GPT-4o128k
GPT-4o Mini128k
GPT-4o Mini Search Preview128k
GPT-4o Search Preview128k
GPT-5 Chat128k
GPT-5.1 Chat128k
GPT-5.2 Chat128k
GPT-5.3 Chat128k
o1 Preview128k
o1-mini128k
Command R128k
Command R+128k
Voxtral Small32k
GPT-3.5 Turbo16k
babbage-00216k
davinci-00216k
Aya Vision 32B16k
computer-use-preview8k
GPT-48k
Tiny Aya Earth8k
Tiny Aya Global8k
Claude Opus 51M

Benchmarks

Benchmarks Score Setting tested
Intelligence Index Artificial Analysis's composite score across about ten independent evaluations (reasoning, knowledge, coding, agentic work, long context), run the same way for every model. The strongest models score in the 50s. 50.8 Max
SciCode Writing code to solve research-level problems in physics, chemistry, biology and maths, checked by tests. 56.4% Max
GPQA Diamond Graduate-level questions in biology, physics and chemistry, written to be resistant to web search. PhD holders in the relevant field score around 65%, so scores above that indicate genuine domain reasoning rather than recall. 93.2% Max
Humanity's Last Exam About 2,500 expert-written questions at the frontier of human knowledge across maths, science and the humanities. Even the best models answer well under two thirds. 54.9% Max
MMMU-Pro (visual reasoning) College-level questions that require reading charts, diagrams and figures, with distractors that defeat text-only guessing. 84.7% Max
Long-context reasoning (AA-LCR) Questions that require reasoning across several long documents at once (around 100k tokens), not just finding one passage. 79.3% Max

Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index. Source

Alternatives

Same category, closest price, other providers first.

Claude Opus 5.5 Anthropic · Recommended replacement

$8.00 / 1M tokens

Compare
Chat Latest OpenAI

$11.25 / 1M tokens

Compare
GPT-5.6 Sol OpenAI

$8.00 / 1M tokens

Compare
Qwen3.8 Max Prime Alibaba Cloud (Qwen)

$6.00 / 1M tokens

Compare

More from Anthropic

Anthropic
# Model Input Output Context Released Capabilities Price change
1
Claude Fable 5.1 Anthropic
$10.00 $50.00 1M September 2026
2
Claude Opus 5.5 Anthropic
$4.00 $20.00 1M September 2026
3
Claude Sonnet 5.5 Anthropic
$2.00 $10.00 1M September 2026
4
Claude Haiku 5.5 Anthropic
$0.10 $0.50 1M October 2026
5
Claude Mythos 5.1 Limited access Anthropic
$10.00 $50.00 1M September 2026
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Frequently asked questions

How much does Claude Opus 5 cost?

Claude Opus 5 is priced at input $5.00 / 1M tokens, output $25.00 / 1M tokens, cached input $0.50 / 1M tokens, cache write $6.25 / 1M tokens, according to Anthropic's published pricing (checked Oct 22, 2026).

What is the context window of Claude Opus 5?

Claude Opus 5 accepts up to 1M tokens per request. It can write up to 128k tokens in one response.

Is Claude Opus 5 still available?

Yes, but Anthropic lists it as a legacy model and recommends newer ones. Anthropic points to Claude Opus 5.5 as its replacement.

When was Claude Opus 5 released?

Claude Opus 5 was released in July 2026.

What is the API model ID for Claude Opus 5?

Use claude-opus-5 when calling the Anthropic API.

What are the alternatives to Claude Opus 5?

Models in the same category at a similar price include Claude Opus 5.5 (Anthropic), Chat Latest (OpenAI), GPT-5.6 Sol (OpenAI) and Qwen3.8 Max Prime (Alibaba Cloud (Qwen)).