Anthropic: Claude Opus 4.8 (Fast)
Analysis Summary
This fast variant of Claude Opus 4.8 offers the same large context window, vision, and tool-calling support as the standard release, aimed at lower latency use cases. No independent benchmark data is published for this specific variant.
Businesses needing verified reasoning and coding depth should reference the standard Opus 4.8 scores; this fast version is best considered for latency-sensitive tasks where some capability trade-off is acceptable.
Pricing matches the flagship tier, so the appeal here is speed rather than cost savings.
Assessed July 29, 2026
Editorial notes
Claude Opus 4.8 (Fast) is a speed-optimised variant without its own published benchmarks, so its capability relative to the standard Opus 4.8 is unverified.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
Claude Opus 4.8 (Fast) is a speed-optimised variant without its own published benchmarks, so its capability relative to the standard Opus 4.8 is unverified.
How Anthropic: Claude Opus 4.8 (Fast) compares
Its 1M-token context window is larger than 88% of the models we list. At $10.00 per million input tokens it is cheaper than 4% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $10.00 | $0.010000 |
| Output | $50.00 | $0.050000 |
What would Anthropic: Claude Opus 4.8 (Fast) cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 654 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Anthropic: Claude Opus 4.8 (Fast) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout Anthropic: Claude Opus 4.8 (Fast)
Fast-mode variant of Opus 4.8 - identical capabilities with higher output speed at 2x pricing relative to regular Opus 4.8. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Frequently asked questions about Anthropic: Claude Opus 4.8 (Fast)
How much does Anthropic: Claude Opus 4.8 (Fast) cost?
Anthropic: Claude Opus 4.8 (Fast) costs $10.00 per million input tokens and $50.00 per million output tokens.
What is the context window of Anthropic: Claude Opus 4.8 (Fast)?
Anthropic: Claude Opus 4.8 (Fast) has a context window of 1,000,000 tokens (1M).
What can Anthropic: Claude Opus 4.8 (Fast) do?
Anthropic: Claude Opus 4.8 (Fast) supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Opus 4.8 (Fast)?
Anthropic: Claude Opus 4.8 (Fast) is developed by Anthropic and was released on May 27, 2026.
