Claude Haiku 4.5 vs Claude Opus 5.5
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models.
- Reasoning estimated
- Speed estimated
- ▲
- Input
- Output
- Context
- 200 K tokens
- Max output
- 64 K
- Input, $ per 1M tokens
- ▲$1.00
- Output, $ per 1M tokens
- ▲$5.00
- Cache read, $ per 1M
- $0.100
- Batch (input / output)
- $0.500 / $2.50
- Tool calling
- Yes
- Released
- 10/15/2025
- Knowledge cutoff
- 2025-02-28
- API id
- anthropic/claude-haiku-4.5
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
- Reasoning estimated
- ▲
- Speed estimated
- Input
- Output
- Context
- ▲1 M tokens
- Max output
- ▲128 K
- Input, $ per 1M tokens
- $4.00
- Output, $ per 1M tokens
- $20.00
- Cache read, $ per 1M
- $0.200
- Batch (input / output)
- $2.00 / $10.00
- Tool calling
- Yes
- Released
- ▲09/22/2026
- Knowledge cutoff
- 2026-06
- API id
- anthropic/claude-opus-5.5
Which is the better API choice: Claude Haiku 4.5 vs Claude Opus 5.5?
- Claude Haiku 4.5: cheapest input (75% less than Claude Opus 5.5)
- Claude Haiku 4.5: cheapest output
- Claude Opus 5.5: largest context (1 M)
- Claude Opus 5.5: the newest (09/22/2026)
- Claude Opus 5.5: most reasoning (estimated)
- Claude Haiku 4.5: the fastest (estimated)
Claude Haiku 4.5 costs 75% less on input and 75% less on output than Claude Opus 5.5 ($1.00 / $5.00 versus $4.00 / $20.00 per million tokens). Claude Opus 5.5 accepts more context (1 M). Claude Haiku 4.5 and Claude Opus 5.5 offer a batch tier at half price for jobs that do not need an immediate answer.
What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
With Claude Haiku 4.5 you save $105.00 a month versus Claude Opus 5.5 (75% less).
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Paste your prompt: tokens and cost per model
Rough estimate (about 4 characters per token). Nothing is sent to any server.
Cost of sending it 1,000 times (input only)
- 1Claude Haiku 4.5 Anthropic$0.076
- 2Claude Sonnet 5.5 Anthropic$0.152
- 3Claude Sonnet 5 Anthropic$0.152
- 4Claude Opus 5.5 Anthropic$0.304
- 5Claude Opus 5 Anthropic$0.380
- 6Claude Opus 4.8 Anthropic$0.380
- 7Claude Fable 5.1 Anthropic$0.760
- 8Claude Fable 5 Anthropic$0.760
Popular comparisons
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- Gemini 3.8 Flash vs DeepSeek V4.1 Flash
- Gemini 3.8 Flash vs Grok 4.7
- DeepSeek V4.1 Flash vs Grok 4.7
Frequently asked questions
Which is the better API choice: Claude Haiku 4.5 vs Claude Opus 5.5?
Claude Haiku 4.5 costs 75% less on input and 75% less on output than Claude Opus 5.5 ($1.00 / $5.00 versus $4.00 / $20.00 per million tokens). Claude Opus 5.5 accepts more context (1 M). Claude Haiku 4.5 and Claude Opus 5.5 offer a batch tier at half price for jobs that do not need an immediate answer.
Which is cheaper: Claude Haiku 4.5 and Claude Opus 5.5?
Claude Haiku 4.5 is cheaper: $1.00 per million input tokens and $5.00 per million output tokens, versus $4.00 / $20.00 for Claude Opus 5.5.
Which has more context: Claude Haiku 4.5 and Claude Opus 5.5?
Claude Opus 5.5 accepts 1 M tokens of context; Claude Haiku 4.5 accepts 200 K.
Which is newer: Claude Haiku 4.5 and Claude Opus 5.5?
Claude Opus 5.5 was released on 09/22/2026; Claude Haiku 4.5 on 10/15/2025.
What would 10,000 requests a month cost with Claude Haiku 4.5 and Claude Opus 5.5?
With 1,500 input and 400 output tokens per request: Claude Haiku 4.5: $35.00; Claude Opus 5.5: $140.00 a month, at list price.
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.