Claud
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Claud models

Every Claud model speaks the same API. Pick the one that fits the job and switch at any time by changing the model name.

Claud 5.1

Fast and capable

Our balanced everyday model. Strong reasoning with quick responses, ideal for chat, coding and analysis.

StreamingReasoningVisionTool useJSON mode
Try in chatOpen playground
Model ID
claud-5.1
Context window
256,000 tokens
Max output
65,536 tokens
Input / 1M
$0.75
Cached input / 1M
$0.075
Output / 1M
$3.00
Availability
All plans
Released
Sep 2026

Claud Opus

Advanced reasoning

Our most capable model for complex, multi-step work where quality matters most.

StreamingReasoningVisionTool useJSON mode
Try in chatOpen playground
Model ID
claud-opus
Context window
256,000 tokens
Max output
131,072 tokens
Input / 1M
$3.00
Cached input / 1M
$0.150
Output / 1M
$9.00
Availability
Paid plans
Released
Sep 2026

Claud Reason

Deep reasoning

Extended thinking for hard problems: mathematics, research synthesis and intricate debugging.

StreamingReasoningVisionTool useJSON mode
Try in chatOpen playground
Model ID
claud-reason
Context window
256,000 tokens
Max output
131,072 tokens
Input / 1M
$0.90
Cached input / 1M
$0.090
Output / 1M
$3.60
Availability
All plans
Released
Sep 2026

Claud Flash

Fast responses

Lowest latency and cost for high-volume tasks: classification, extraction, summaries and simple chat.

StreamingReasoningVisionTool useJSON mode
Try in chatOpen playground
Model ID
claud-flash
Context window
128,000 tokens
Max output
32,768 tokens
Input / 1M
$0.22
Cached input / 1M
$0.022
Output / 1M
$1.75
Availability
All plans
Released
Sep 2026