What are the verified coding and reasoning benchmarks for Mistral: Codestral 2508?

Mistral: Codestral 2508 achieves SWE-bench Verified: 43.5% (FIM / Agentic), LiveCodeBench: 42%, AIME: 38%. Verified sources: Codestral 2508 Release and Benchmarks (Mistral AI).

Does Swarm isolate Mistral: Codestral 2508 code edits from other agents?

Yes. Swarm provisions isolated Git worktrees for every session and subagent, preventing file race conditions and keeping your main working tree clean until verification passes.

Can Mistral: Codestral 2508 be assigned to specific subagent roles?

Yes. In ~/.swarm/config.json, you can configure Mistral: Codestral 2508 as Primary/Planner (DAG task decomposition), Coder (implementation in isolated worktrees), or Finder (read-only symbol search).

Mistral: Codestral 2508 — Specs, Context & Capabilities

Q: What is the recommended Swarm multi-agent topology for Mistral: Codestral 2508?

Swarm recommends Mistral: Codestral 2508 as Coder Subagent (Tier 2: Specialized Code Synthesis Engine). Excellent for isolated function implementation, refactoring routines, and syntax patching in Task Programs. Best paired with: Claude 3.7 Sonnet as Lead Planner.

Q: How do I run Mistral: Codestral 2508 with Swarm?

Configure Mistral: Codestral 2508 via CLI using: swarm ctl model set --provider openrouter --model openrouter/mistralai/codestral-2508, or switch models interactively inside the terminal TUI with /models.

Mistral: Codestral 2508 Benchmarks & Agentic Accuracy

Verified primary research & developer preference metrics

Primary Sources Verified

SWE-bench Verified

43.5%

FIM / AgenticMistral AI System Card ↗

LiveCodeBench

42%

StandardLiveCodeBench ↗

LMSYS Coding Elo

1305Elo

Coding ArenaLMSYS Arena ↗

AIME 2024 / 2025

38%

StandardMistral AI System Card ↗

Pricing ($ / 1M tokens)

$0.3/ $0.9

$0.08 cached readStandard API Pricing

What This Means in Real Software Development

Specialized for code generation with 256k context window and native Fill-In-the-Middle (FIM) support.
Scores 43.5% on SWE-bench Verified with rapid single-pass patch generation.
High throughput (90 TPS) provides fast turn-around in interactive coding sessions.
Economical $0.30/M input pricing on Mistral AI and OpenRouter.

Swarm Multi-Agent Topology

Tier 2: Specialized Code Synthesis EngineRole: Coder Subagent

Best Paired With: Claude 3.7 Sonnet as Lead Planner

Excellent for isolated function implementation, refactoring routines, and syntax patching in Task Programs.

Git Worktree Isolation Advantage:

Authors and validates code diffs within isolated Git worktrees.

What Developers & Practitioners Are Saying

Real-world field observations, production strengths, and developer consensus

Field Consensus

"Mistral's dedicated code generation model. Extremely fast with a focused 256k context window, specifically tuned for fill-in-the-middle (FIM) and code completion."

Verified Real-World Strengths

Superior fill-in-the-middle (FIM) performance for IDE tab completion
Low latency (~90 TPS) with affordable pricing ($0.30/M in, $0.90/M out)
Fluent in over 80 programming languages

Production Caveats & Gaps

SWE-bench score (34.0%) reflects weaker high-level multi-file planning
Better suited as an implementation subagent than a lead architect

Primary Sources & Methodology Citations

Codestral 2508 Release and Benchmarks — Mistral AI (August 2025)

Mistral: Codestral 2508 model overview

Mistral: Codestral 2508 is listed in the public Swarm catalog through OpenRouter. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.

Provider: OpenRouter
Family: OpenRouter
Context window: 256K tokens
Thinking support: Not supported
Availability status: Available
Catalog ID: openrouter/mistralai/codestral-2508

File input
Text input
Text output
Tools
Structured output
JSON

Run Mistral: Codestral 2508 in Swarm

Verified CLI workflow & multi-agent architecture

Quickstart Guide →

bash — swarm run

$swarm ctl model set --provider openrouter --model openrouter/mistralai/codestral-2508

# Or switch interactively inside the terminal TUI:

>/models

Subagent Role Matrix

Assign Mistral: Codestral 2508 to specialized system roles in ~/.swarm/config.json:

Primary / Planner: Orchestrates full task DAGs and multi-stage pipelines.
Coder Subagent: Generates code and unit tests inside private Git worktrees.
Finder Subagent: Performs read-only code search, symbol discovery, and mapping.

System Agent Roles →Why Swarm Architecture →