Claude Code token overhead dwarfs OpenCode

// 1h agoBENCHMARK RESULT

Claude Code token overhead dwarfs OpenCode

A comparative benchmark by Systima AI reveals Claude Code's baseline payload is ~33,000 tokens, nearly five times OpenCode's 7,000-token baseline. While Claude Code batches parallel tools efficiently on multi-step tasks, prefix instability triggers frequent cache re-writes, inflating costs up to 54x compared to OpenCode.

// ANALYSIS

While Claude Code's batching is superior for complex multi-turn workflows, the sheer weight of its agent harness and its unstable caching strategy make it an expensive, context-hogging choice for simpler, single-turn tasks.

–Claude Code's baseline of ~33k tokens consumes a sixth of a standard 200k context window before any codebase context or user prompt is read.
–Caching is not a magic bullet: Claude Code's unstable prefixes cause frequent mid-session cache re-writes, which are billed at premium rates.
–Multi-agent delegation is a major cost driver: fanning out to subagents creates a massive 4.2x multiplier on token usage because each subagent pays its own bootstrap cost.
–Project configuration (MCP servers and instruction files) heavily inflates the baseline of both tools, with instructions adding around 20k tokens per request.
–On multi-step tasks, Claude Code's ability to batch parallel tool calls helps it remain competitive with OpenCode by minimizing the total number of API turns.

// TAGS

claude-codeopencodetoken-overheadprompt-cachingagentbenchmarksllm-cost

DISCOVERED

1h ago

2026-07-12

PUBLISHED

3h ago

2026-07-12

RELEVANCE

8/ 10

AUTHOR

systima

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