Anthropic: Claude Haiku 4.5 vs OpenAI: GPT-5 Mini
OpenAI: GPT-5 Mini is cheaper than Anthropic: Claude Haiku 4.5 by about 66% on a blended (75% input / 25% output) basis. Anthropic: Claude Haiku 4.5 charges $1.000000 / $5.000000 per 1M input/output tokens; OpenAI: GPT-5 Mini charges $0.250000 / $2.000000.
| Field | Anthropic: Claude Haiku 4.5 | OpenAI: GPT-5 Mini |
|---|---|---|
| Input $/Mtok | $1.000000 | $0.250000 |
| Output $/Mtok | $5.000000 | $2.000000 |
| Cache read $/Mtok | $0.100000 | $0.025000 |
| Cache write $/Mtok | $1.250000 | – |
| Input $/Mchar | n/a | 0.070428 |
| Output $/Mchar | n/a | 0.563428 |
| Context window | 200000 | 400000 |
| Tokenizer | claude | o200k |
Price history
Same workload, monthly cost
Illustrative monthly cost at 10M tokens/month, split per workload preset. Not a substitute for the calculator, which uses your own volume, cache and batch assumptions.
| Workload | Anthropic: Claude Haiku 4.5 | OpenAI: GPT-5 Mini |
|---|---|---|
| Coding agent | $12.00 | $3.38 |
| RAG chat | $16.00 | $5.13 |
| Summarisation (batch) | $14.00 | $4.25 |
| Classification | $10.80 | $2.85 |
| Chat assistant | $26.00 | $9.50 |
| Content generation | $42.00 | $16.50 |
Cite this page
Anthropic: Claude Haiku 4.5 vs OpenAI: GPT-5 Mini: $1.000000/$5.000000 vs $0.250000/$2.000000 per 1M tokens, as of 2026-10-04 (Token Barometer, https://tokenbarometer.com/compare/anthropic_claude-haiku-4-5-vs-openai_gpt-5-mini).
Anthropic: Claude Haiku 4.5 page | OpenAI: GPT-5 Mini page | Open in calculator