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Claude vs Grok API pricing, compared model by model
On 25 September 2026 the cheapest Claude model costs $0.25 per million input tokens against $1.00 for the cheapest Grok model, and the typical Grok model is the cheaper of the two.
| Claude (Anthropic) | Grok (xAI) | |
|---|---|---|
| Models listed | 15 | 7 |
| Cheapest model | Claude 3 Haiku, $0.25 in, $1.25 out | Grok Build 0.1, $1.00 in, $2.00 out |
| Most expensive model | Claude Opus 4.1, $15.00 in, $75.00 out | Grok 4.6, $2.00 in, $6.00 out |
| Median input price | $5.00 | $1.25 |
| Median output price | $25.00 | $2.50 |
| Largest context | 1M, Claude Opus 5.5 | 2M, Grok 4.20 Multi-Agent |
| Newest model | Claude Opus 5.5, 2026-09-22 | Grok 4.7, 2026-09-21 |
| Models with a batch price | 13 | 1 |
Every model, with your monthly cost
| Model | Provider | Input | Output | Cached input | Batch in / out | Context | Your month | Listed |
|---|---|---|---|---|---|---|---|---|
| Claude Opus 5.5 | Anthropic | $4.00 | $20.00 | $0.20 | $2.00 / $10.00 | 1M | $540.00 | 2026-09-22 |
| Grok 4.7 | xAI | $1.60 | $4.80 | $0.40 | 500K | $168.00 | 2026-09-21 | |
| Claude Fable 5.1 | Anthropic | $10.00 | $50.00 | $0.25 | $5.00 / $25.00 | 1M | $1,350.00 | 2026-09-01 |
| Grok 4.6 | xAI | $2.00 | $6.00 | $0.50 | 500K | $210.00 | 2026-08-12 | |
| Claude Opus 5 | Anthropic | $5.00 | $25.00 | $0.50 | $2.50 / $12.50 | 1M | $675.00 | 2026-07-24 |
| Grok 4.5 | xAI | $2.00 | $6.00 | $0.30 | 500K | $210.00 | 2026-07-08 | |
| Claude Sonnet 5 | Anthropic | $2.00 | $10.00 | $0.20 | $1.00 / $5.00 | 1M | $270.00 | 2026-06-30 |
| Claude Fable 5 | Anthropic | $10.00 | $50.00 | $1.00 | $5.00 / $25.00 | 1M | $1,350.00 | 2026-06-09 |
| Claude Opus 4.8 | Anthropic | $5.00 | $25.00 | $0.50 | $2.50 / $12.50 | 1M | $675.00 | 2026-05-27 |
| Grok Build 0.1 | xAI | $1.00 | $2.00 | $0.20 | 256K | $90.00 | 2026-05-20 | |
| Grok 4.3 | xAI | $1.25 | $2.50 | $0.20 | $1.00 / $2.00 | 1M | $112.50 | 2026-04-30 |
| Claude Opus 4.7 | Anthropic | $5.00 | $25.00 | $0.50 | $2.50 / $12.50 | 1M | $675.00 | 2026-04-16 |
| Grok 4.20 Multi-Agent | xAI | $1.25 | $2.50 | $0.20 | 2M | $112.50 | 2026-03-31 | |
| Grok 4.20 | xAI | $1.25 | $2.50 | $0.20 | 2M | $112.50 | 2026-03-31 | |
| Claude Sonnet 4.6 | Anthropic | $3.00 | $15.00 | $0.30 | $1.50 / $7.50 | 1M | $405.00 | 2026-02-17 |
| Claude Opus 4.6 | Anthropic | $5.00 | $25.00 | $0.50 | $2.50 / $12.50 | 1M | $675.00 | 2026-02-04 |
| Claude Opus 4.5 | Anthropic | $5.00 | $25.00 | $0.50 | $2.50 / $12.50 | 200K | $675.00 | 2025-11-24 |
| Claude Haiku 4.5 | Anthropic | $1.00 | $5.00 | $0.10 | $0.50 / $2.50 | 200K | $135.00 | 2025-10-15 |
| Claude Sonnet 4.5 | Anthropic | $3.00 | $15.00 | $0.30 | $1.50 / $7.50 | 1M | $405.00 | 2025-09-29 |
| Claude Opus 4.1 | Anthropic | $15.00 | $75.00 | $1.50 | $7.50 / $37.50 | 200K | $2,025.00 | 2025-08-05 |
| Claude Sonnet 4 | Anthropic | $3.00 | $15.00 | $0.30 | 200K | $405.00 | 2025-05-22 | |
| Claude 3 Haiku | Anthropic | $0.25 | $1.25 | $0.03 | 200K | $33.75 | 2024-03-13 |
All Claude prices . All Grok prices . Every provider
Common questions
Is Claude cheaper than Grok?
On 25 September 2026, the median Claude model on this list costs $5.00 per million input tokens and $25.00 per million output tokens, against $1.25 and $2.50 for Grok. By that measure Grok is cheaper, but compare the specific models you would use, since both providers sell models at very different price points.
What is the cheapest Claude model compared with the cheapest Grok model?
The cheapest Claude model is Claude 3 Haiku at $0.25 in and $1.25 out per million tokens. The cheapest Grok model is Grok Build 0.1 at $1.00 in and $2.00 out.
Which has the larger context window, Claude or Grok?
The largest Claude context on this list is 1M tokens (Claude Opus 5.5) and the largest Grok context is 2M tokens (Grok 4.20 Multi-Agent).
How should I choose between Claude and Grok for a production agent?
Price per token is one input. Run both on a set of your own real cases, count how often each needs a retry or a human check, and compare the total cost of a correct answer rather than the cost of a token.
Choosing a model for a production agent
Price is one input. Quality on your own cases, latency and the cost of retries decide the rest. Tell me what you are building.