iilib
Research comparison

Mistral Medium 3.5 vs Claude Sonnet 5.5

Mistral Medium 3.5 and Claude Sonnet 5.5 both target coding and agentic work. Mistral Medium 3.5 is released as open weights, while Claude Sonnet 5.5 is served as a proprietary Anthropic model.

Verified Oct 3, 202613 evidence sources
Model

Mistral Medium 3.5

Mistral Medium 3.5 is an open-weight multimodal model from Mistral AI optimized for agentic and coding workloads, with a 256K-token context window.

Provider
Mistral AI
Categories
—
Model links
0
API links
1
Model

Claude Sonnet 5.5

Claude Sonnet 5.5 is an Anthropic model released in September 2026 with a one-million-token context window, text and image input, and text output.

Provider
Anthropic
Categories
—
Model links
0
API links
1

Structured facts

Entity profiles

These fields come from each entity record and are kept separate from the curated comparison notes below.

Mistral Medium 3.5

Entity type
Model
Status
Active
Verified
Oct 3, 2026
Family
Mistral Medium
Context window
256,000
Max output
—
Input
Text, Image
Output
Text
Open weights
Yes
Pricing
Input USD 1.5/M · Output USD 7.5/M

Claude Sonnet 5.5

Entity type
Model
Status
Active
Verified
Oct 3, 2026
Family
Claude 5.5
Context window
1,000,000
Max output
128,000
Input
Text, Image
Output
Text
Open weights
No
Pricing
Input USD 2/M · Output USD 10/M

Editorial comparison

Key differences

These rows are curated comparison data, distinct from automatically aggregated graph relationships.

Knowledge graph

Connected models and APIs

Mistral Medium 3.5

Models

No model links in the current graph.

Claude Sonnet 5.5

Models

No model links in the current graph.