Claude 3.5 Haiku vs Claude 3.7 Sonnet
Claude 3.7 Sonnet significantly outperforms across most benchmarks. Claude 3.5 Haiku is 3.8x cheaper per token.
Anthropic · Anthropic · Updated for 2026
Which is better?
Claude 3.5 Haiku outperforms in 0 benchmarks, while Claude 3.7 Sonnet is better at 4 benchmarks (GPQA, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail). Claude 3.7 Sonnet significantly outperforms across most benchmarks.
On price, Claude 3.5 Haiku is roughly 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Claude 3.5 Haiku
- cost matters — it's about 3.8x cheaper per token
Choose Claude 3.7 Sonnet
- you want the strongest raw capability — it leads on 4 of 4 shared benchmarks
- you want the most recent training data — it shipped Feb 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Claude 3.5 Haiku outperforms in 0 benchmarks, while Claude 3.7 Sonnet is better at 4 benchmarks (GPQA, SWE-Bench Verified, TAU-bench Airline, TAU-bench Retail).
Claude 3.7 Sonnet significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.5 Haiku ($0.80/1M tokens) is 3.8x cheaper than Claude 3.7 Sonnet ($3.00/1M tokens).
For output processing, Claude 3.5 Haiku ($4.00/1M tokens) is 3.8x cheaper than Claude 3.7 Sonnet ($15.00/1M tokens).
In conclusion, Claude 3.7 Sonnet is more expensive than Claude 3.5 Haiku.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 200,000 tokens. Claude 3.5 Haiku can generate longer responses up to 200,000 tokens, while Claude 3.7 Sonnet is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
Claude 3.7 Sonnet supports multimodal inputs, whereas Claude 3.5 Haiku does not.
Claude 3.7 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude 3.5 Haiku
Claude 3.7 Sonnet
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude 3.5 Haiku was released on 2024-10-22, while Claude 3.7 Sonnet was released on 2025-02-24.
Claude 3.7 Sonnet is 4 months newer than Claude 3.5 Haiku.
Oct 22, 2024
1.8 years ago
Feb 24, 2025
1.5 years ago
4mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude 3.5 Haiku is available from Bedrock, Google, Anthropic. Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google.
Claude 3.5 Haiku
Claude 3.7 Sonnet
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3.5 Haiku and Claude 3.7 Sonnet side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3.5 Haiku vs Claude 3.7 Sonnet.