Model comparison

Claude Haiku 4.5 vs GPT 5 Codex

Compare Anthropic: Claude Haiku 4.5 (Anthropic) and GPT 5 Codex (OpenAI) by price, context, capabilities, and latency.

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Which should you pick?

  • Price: Anthropic: Claude Haiku 4.5 is cheaper ($1 / 1M tokens input / $5 / 1M tokens output) vs GPT 5 Codex ($1.25 / 1M tokens input / $10 / 1M tokens output).
  • Context: Anthropic: Claude Haiku 4.5 has the larger context window (200k tokens).
  • Anthropic: Claude Haiku 4.5 adds: Tool calling, JSON mode, Vision, Long context.

Side by side

Anthropic: Claude Haiku 4.5 vs GPT 5 Codex — full comparison

Compare price, provider, context, capabilities, latency, and source basis.

ModelProviderInputOutputContextCapabilitiesBest forLatencyStatusSource
Anthropic: Claude Haiku 4.5anthropic/claude-haiku-4.5Anthropic$1 / 1M tokens$5 / 1M tokens200k
StreamingTool callingJSON modeVision
image understanding, multimodal chat1510-2510msCatalogPlatform curated
GPT 5 Codexopenai/gpt-5-codexOpenAI$1.25 / 1M tokens$10 / 1M tokens—
Streaming
General chat via OpenAI, API workloads1202-5837msCatalogPlatform curated

FAQ

Anthropic: Claude Haiku 4.5 vs GPT 5 Codex FAQ

Is Anthropic: Claude Haiku 4.5 or GPT 5 Codex cheaper?

Anthropic: Claude Haiku 4.5 is cheaper ($1 / 1M tokens input / $5 / 1M tokens output) vs GPT 5 Codex ($1.25 / 1M tokens input / $10 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.

Which has a larger context window, Anthropic: Claude Haiku 4.5 or GPT 5 Codex?

Anthropic: Claude Haiku 4.5 is larger (200k tokens) vs — tokens.

Anthropic: Claude Haiku 4.5 detailsGPT 5 Codex detailsPricing calculatorOpenAI-compatible quickstart

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