Claude Sonnet 3.5 v2

Tool callingImage inputFile input

Model card Launch post Website

Balanced Claude model for coding, analysis, agent workflows, and cost control

Context: 200K
Released: 1y ago

Sources:models.dev

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

Other published benchmarks

Evaluation	Reported score and source
FrontierMath-2025-02-28-Private	2.1% Epoch AI · claude-3-5-sonnet-20241022 Epoch AI evaluation
FrontierMath-Tier-4-2025-07-01-Private	0.0% Epoch AI · claude-3-5-sonnet-20241022 Epoch AI evaluation
GPQA diamond	55.3% Epoch AI · claude-3-5-sonnet-20241022 Epoch AI evaluation
OTIS Mock AIME 2024-2025	8.5% Epoch AI · claude-3-5-sonnet-20241022 Epoch AI evaluation

Benchmark compilation: Epoch AI, Capabilities & benchmarking (CC BY attribution). Scores are converted to percentages and model names matched to the Vertical Tabs catalog. Individual evaluations are credited to their original sources. External results may carry separate licences and evaluation configurations; do not interpret scores from different harnesses as directly comparable.

Specifications

Developer: Anthropic
Model family: Claude
Type: Language model
Predecessor: —
Successor: —
Released: October 22, 2024
Model ID: anthropic/claude-3-5-sonnet-20241022
Openness: Closed
License: —
Input modalities: text, image, file
Output modalities: text
Modality: text+image+file->text
Max output tokens: 8K
Knowledge cutoff: 2024-04-30
Hugging Face: —
Source freshness: Metadata synced Oct 8, 2026, 10:17 PM UTC

Additional source evidence

Source model: anthropic/claude-3-5-sonnet-20241022
Source family: claude-sonnet
Last updated: 2024-10-22
Knowledge cutoff: 2024-04-30
Model context: 200K
Model output limit: 8K
Open weights: No
File attachments: Yes
Reasoning: No
Tool calling: Yes
Temperature control: Yes

Published benchmarks

Benchmark	Score	Evaluation details	Evidence
Aider Polyglot	51.6 · percent correct	2025-01-17	Source

Complete source record (JSON)

{
  "id": "anthropic/claude-3-5-sonnet-20241022",
  "name": "Claude Sonnet 3.5 v2",
  "description": "Balanced Claude model for coding, analysis, agent workflows, and cost control",
  "family": "claude-sonnet",
  "last_updated": "2024-10-22",
  "knowledge": "2024-04-30",
  "attachment": true,
  "reasoning": false,
  "tool_call": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image",
      "pdf"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 200000,
    "output": 8192
  },
  "benchmarks": [
    {
      "name": "Aider Polyglot",
      "score": 51.6,
      "source": "https://aider.chat/docs/leaderboards/",
      "metric": "percent correct",
      "date": "2025-01-17"
    }
  ],
  "release_date": "2024-10-22",
  "open_weights": false
}

Infrastructure

Provider availability

All providers

Provider endpoint data will appear after this model's first OpenRouter endpoint sync.

Text provenance

Transitioning

Claude text watermarking

Anthropic says Claude models launched before August 2, 2026 have a transition period and are being moved to the same watermarking system over time.

Official explanation