Claude Opus 5
Claude Opus 5Alternatives?
CheaperGPT-6 Astramax+5%-10%$3.26Monitoring can return HTTP 403+2BetterGPT-6.1 Solhigh+3%-91%$0.32Remove unsupported parameters+5
OpenMuse Spark Openxhigh-2%-77%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1Lower effortSame modelmediumsame-39%$2.19CheaperClaude Opus 5.5high+4%-50%$1.82No forced tool use+5GPT-6 Astramax+5%-10%$3.26Monitoring can return HTTP 403+2GPT-6.1 Solmax+4%-80%$0.72Remove unsupported parameters+5Claude Opus 5.5high+4%-50%$1.82No forced tool use+5
Gemini 3.8 Flashhigh+4%-66%*$1.24Sampling parameters are ignored+1GPT-5.6 Solmaxsame-45%$1.99GPT-6.1 Solhigh+3%-91%$0.32Remove unsupported parameters+5Claude Opus 5.5low+3%-85%$0.55No forced tool use+5GPT-6 Astralow+3%-77%$0.82Monitoring can return HTTP 403+2Gemini 3.8 Flashhigh+4%-66%*$1.24Sampling parameters are ignored+1Muse Spark OpenxhighOpen-2%-77%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1
DeepSeek V4.1 Flash 1017maxOpen-2%-93%$0.26Pass back reasoning_content · Chat Completions+4
Kimi K3maxOpen-2%-45%$2.00Sampling parameters are fixed+3
Qwen3.8 FlashthinkingOpen-3%-90%$0.37Context: 1M → 262K+6Kimi K2.6thinkingOpen-4%-78%$0.80Context: 1M → 256KClaude Opus 5.5high+4%-50%$1.82No forced tool use+5Claude Sonnet 5max-6%+41%$5.09Claude Opus 4.7high-7%—$5 / $25Claude Opus 4.6high-12%—$5 / $25Claude Opus 4.5non-thinking-14%—$5 / $25Context: 1M → 200KClaude Sonnet 4.6non-thinking-14%—$3 / $15Claude Sonnet 4.5non-thinking-21%—$3 / $15Claude Haiku 4.5non-thinking-33%—$1 / $5Context: 1M → 200KAll Anthropic models →History
9 versionsBenchmarks
in Vision & DocumentsFAQ
How much does Claude Opus 5 cost?›
$5 per 1M input tokens and $25 per 1M output tokens; cached input $0.50 per 1M. A typical benchmark task costs about $3.61 at high effort.
Is Claude Opus 5 free to use?›
There is no free API; the cheapest paid price is $5 per 1M input tokens.
How good is Claude Opus 5, and what is it best at?›
#9 of 334 in Chat & Knowledge, #9 of 132 in Coding, #31 of 133 in Agents & Tool Use, #10 of 195 in Writing & Language, #9 of 124 in Vision & Documents. Strongest at: Coding, Agents & work tasks, Reasoning, Science, Long context, Knowledge, Vision.
Is Claude Opus 5 better than Gemini 3.8 Flash?›
On MMMU-Pro (vision), Claude Opus 5 scores 84.7 vs 85.6 — about the same. It is 191% more expensive per task.
How can I use Claude Opus 5?›
Through the API of Amazon Bedrock, Anthropic, Azure, Claude Platform on AWS, DeepInfra and 1 more.
What is the context window of Claude Opus 5?›
1M tokens, with up to 128K output tokens.
When was Claude Opus 5 released? Is there a newer version?›
Released 2026-07-24. It has been superseded by Claude Opus 5.5.
Is Claude Opus 5 open source?›
No, Claude Opus 5 is a closed model available through an API. The closest open-weights option here is Muse Spark Open.
Can Claude Opus 5 read images?›
It accepts text and images, PDF files as input.
What is Claude Opus 5?›
Claude Opus 5 is a closed language model from Anthropic, released Jul 2026, the successor to Claude Opus 4.8.
What are the best alternatives to Claude Opus 5?›
GPT-6 Astra (cheaper), GPT-6.1 Sol (better), Muse Spark Open (open weights).