Anthropic tells you to start here and only move up when your evals say you have to. Take the advice.
Status
released
Released
24 July 2026
Context
1M tokens
Price / 1M
$5.00 in, $25.00 out
Mentions
7
Threads
11
What is Claude Opus 5?
Claude Opus 5 is a model from Anthropic, built in the US. It's out, and you can call it today.
When did Claude Opus 5 come out?
Anthropic released it on 24 July 2026. That date comes from the lab's own docs.
The tracker first logged the name on 24 July 2026 and last saw it on 3 September 2026.
What does it cost, and how much context does it hold?
Lab
Anthropic
Built in
US
Status
released
API model id
claude-opus-5
Released
24 July 2026
Context window
1M tokens
Max output
128K tokens
Input, per 1M tokens
$5.00
Output, per 1M tokens
$25.00
List prices per million tokens, read off the lab's own docs. Caching, batching and volume deals all cut the real number, so treat this as the ceiling. Check the source before you budget against it.
A dash means the lab hasn't published that number for that model.
What are people discussing about Claude Opus 5?
We tracked 11 public discussions naming Claude Opus 5 across r/ClaudeAI, r/ClaudeCode and r/OpenAI between 6 August 2026 and 2 September 2026.
The subject that came up most was benchmark results, then agents and tool use. A discussion can cover several, so these add up to more than 11.
What people are discussing
Threads
benchmark results
2
agents and tool use
1
using it to write code
1
refusals and safety behaviour
1
Every mention we've logged
Every tracked post, release, changelog entry or incident whose title or summary names Claude Opus 5. Newest first, each one linking to where the lab published it.
Sep 3 , 16:23 UTC
Resolved - The issue affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 has been resolved. Impact has ended as of 9:16 PT / 16:16 UTC.
Sep 3 , 16:06 UTC
Monitoring - A fix has been deployed for Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and we are monitoring for recovery.
Sep 3 , 15:25 UTC
Update - The only affected models right now are Opus 4.8 and Opus 5. The rest of the models have recovered to baseline error rate.
Sep 3 , 14:49 UTC
Update - We are continuing to work on a fix for this issue.
Sep 3 , 13:50 UTC
Update - An exhaustive list of…
Aug 24 , 08:30 UTC
Resolved - This issue has been resolved. From 9:50pm PT / 04:50 UTC through 00:36am PT / 07:36 UTC, users saw elevated errors on requests to Claude models, including Claude Opus 5 and Fable 5.
Aug 24 , 07:47 UTC
Update - At this time, we have seen errors stabilize on Opus 5 and Fable 5, and are working to fully resolve success rates on all affected models. We will provide an update as soon as possible.
Aug 24 , 06:42 UTC
Update - We are continuing to work to resolve issues causing elevated requests on multiple models. We will provide an update as soon as possible.
Aug 24…
Aug 19 , 11:02 UTC
Resolved - This incident has been resolved.
Aug 19 , 10:33 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 19 , 09:42 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.
Aug 18 , 19:01 UTC
Resolved - The issue affecting Claude Opus 5 has been resolved. Impact occurred from 16:11 to 18:23 UTC.
Aug 18 , 18:26 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 18 , 17:12 UTC
Update - We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
Aug 18 , 16:20 UTC
Update - We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible.
Aug…
Aug 17 , 15:29 UTC
Resolved - This incident has been resolved.
Aug 17 , 14:39 UTC
Monitoring - A fix has been implemented and we are monitoring the results.
Aug 17 , 14:25 UTC
Update - Claude Opus 5 is operational. Claude Sonnet 5 is degraded. We are investigating.
Aug 17 , 13:56 UTC
Investigating - We are investigating elevated errors on requests to Claude Opus 5. We will provide an update as soon as possible.
Aug 5 , 14:34 UTC
Resolved - This incident has been resolved.
Aug 5 , 13:51 UTC
Identified - We have identified the cause of elevated errors on requests to Claude Opus 5 and are working on a fix. We will provide an update as soon as possible.
Opus 5 is a step change improvement for the Opus tier powering long-running agents while delivering improvements in coding and professional work.
Keep reading
The release timeline is every model we know about, filterable by lab, country and date. The tracker is the live feed these mentions come from, and Model Watch is the whole catalogue on one page.