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Fastest First-Token Claude Haiku 4.5 Inference Providers

Ranks providers by how quickly the first generated token appears. Providers without enough recent data remain visible after ranked rows.

Google Vertex currently ranks first at 0.41 s via google-vertex/europe.

Provider options:
6
Ranked:
6
Metric:
Time to first token

Fastest first token endpoint ranking

Fastest First-Token Claude Haiku 4.5 Inference Providers
RankProvider / routeTime to first tokenSpeed measurementsEndpoint details
#1Provider / route
Google Vertexgoogle-vertex/europe
Time to first token0.41 sSpeed measurements
500-token response
6.82 s
Response starts
0.41 s
Output speed
78.0 tok/s
Endpoint details
Input price
$1.1 / 1M tokens
Output price
$5.5 / 1M tokens
Uptime (30 min)
Insufficient recent data
Context
200K
#2Provider / route
Google Vertexgoogle-vertex/global
Time to first token0.56 sSpeed measurements
500-token response
8.02 s
Response starts
0.56 s
Output speed
67.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$5 / 1M tokens
Uptime (30 min)
99.63%
Context
200K
#3Provider / route
Azureazure/us-east-2
Time to first token0.65 sSpeed measurements
500-token response
9.27 s
Response starts
0.65 s
Output speed
58.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$5 / 1M tokens
Uptime (30 min)
Insufficient recent data
Context
200K
#4Provider / route
Anthropicanthropic
Time to first token0.66 sSpeed measurements
500-token response
9.43 s
Response starts
0.66 s
Output speed
57.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$5 / 1M tokens
Uptime (30 min)
100.00%
Context
200K
#5Provider / route
Amazon Bedrockamazon-bedrock/eu-west-1
Time to first token0.68 sSpeed measurements
500-token response
7.67 s
Response starts
0.68 s
Output speed
71.5 tok/s
Endpoint details
Input price
$1.1 / 1M tokens
Output price
$5.5 / 1M tokens
Uptime (30 min)
Insufficient recent data
Context
200K
#6Provider / route
Amazon Bedrockamazon-bedrock/global
Time to first token0.94 sSpeed measurements
500-token response
8.63 s
Response starts
0.94 s
Output speed
65.0 tok/s
Endpoint details
Input price
$1 / 1M tokens
Output price
$5 / 1M tokens
Uptime (30 min)
99.98%
Context
200K

Endpoint data fetched .

Claude Haiku 4.5 endpoint guide

How to interpret the Fastest First-Token Claude Haiku 4.5 Inference Providers

6 of 6 Claude Haiku 4.5 endpoints currently have the published data required for this ranking. Google Vertex leads at 0.41 s via google-vertex/europe. The table keeps unranked routes visible so missing measurements do not look like missing provider availability.

How response-start time is ranked

The first-token ranking orders endpoints by the recent median time before output begins. This is useful for interactive applications, but it should be read alongside throughput because the first provider to start is not always the first to finish a long answer.

Compare Google Vertex with the next option

Google Vertex currently ranks second at 0.56 s. Compare that gap with input and output price, response-start time, output speed, 30-minute uptime, context length, and the exact route before deciding whether first place is meaningful for your workload.

Use the route, not only the provider name

Claude Haiku 4.5 has 6 published provider options, and performance data is matched to each exact OpenRouter routing tag. Different quantization, context, regional deployment, or provider configuration can change price and behavior even when the underlying model name is identical.