GPT-5.4 mini vs Grok 4.3 vs Claude Haiku 4.5
Grok 4.3 comes out ahead, 67 to 63 and 58 on our weighted score, and it is the cheaper option too.
OpenAIGPT-5.4 mini
63/100- ECI148.8
- Price$0.75 / $4.50
- Context400K
- Our pick
xAIGrok 4.3
67/100- ECI149.2
- Price$1.25 / $2.50
- Context1M
AnthropicClaude Haiku 4.5
58/100- ECI142.4
- Price$1.00 / $5.00
- Context200K
Grok 4.3 is our pick
Grok 4.3 is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63) and Claude Haiku 4.5 (58). It leads on context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityGrok 4.3Capabilities Index (ECI): Grok 4.3 149.2 · GPT-5.4 mini 148.8 · Claude Haiku 4.5 142.4
- Lowest priceGrok 4.3Grok 4.3 $1.56 · GPT-5.4 mini $1.69 · Claude Haiku 4.5 $2.00 per 1M tokens (3:1 blend)
- Longest contextGrok 4.3Grok 4.3 1,000,000 · GPT-5.4 mini 400,000 · Claude Haiku 4.5 200,000 tokens
- Widest inputsGrok 4.3 and Claude Haiku 4.5GPT-5.4 mini: Text, Images · Grok 4.3: Text, Images, PDFs · Claude Haiku 4.5: Text, Images, PDFs
- Self-hostingNo open weightsAll three are available only through APIs
| Measure | Weight | GPT-5.4 mini | Grok 4.3 | Claude Haiku 4.5 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 77 | 77 | 69 |
| Price | 25% | 39 | 41 | 36 |
| Inputs & features | 15% | 70 | 80 | 80 |
| Context window | 10% | 44 | 60 | 32 |
| Overall | 100% | 63/100 | 67/100 | 58/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | GPT-5.4 miniOpenAI | Grok 4.3xAI | Claude Haiku 4.5Anthropic |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 148.8 | 149.2 (best) | 142.4 |
| ECI rank | #56 of 148 | #55 of 148 (best) | #90 of 148 |
| GPQA DiamondGraduate-level science questions | 86.9% | 88.8% (best) | 71.2% |
| FrontierMath Tiers 1–3Research-level mathematics | 51.2% (best) | 42.8% | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 88.9% | 93.3% (best) | 66.7% |
| SimpleQA VerifiedShort factual questions | 29.4% | 33.2% (best) | 13.2% |
| Price per million tokens | |||
| Input | $0.75 (best) | $1.25 | $1.00 |
| Output | $4.50 | $2.50 (best) | $5.00 |
| Cached input | $0.075 (best) | $0.20 | $0.10 |
| Blended (3:1) | $1.69 | $1.56 (best) | $2.00 |
| Long-context rate | Same rate | Over 200K: $2.50 / $5.00 | Same rate |
| Price source | Official OpenAI API | Official xAI API | Official Anthropic API |
| Limits | |||
| Context window | 400,000 tokens | 1,000,000 tokens (best) | 200,000 tokens |
| Max output | 128,000 tokens (best) | 30,000 tokens | 64,000 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | No | Yes | Yes |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | Yeslow · medium · high · xhigh | Yeslow · medium · high | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Proprietary |
| API model ID | gpt-5.4-mini | grok-4.3 | claude-haiku-4-5 |
| API providers | 29 | 27 | 34 (best) |
| Released | Mar 17, 2026 | Apr 17, 2026 | Oct 15, 2025 |
| Knowledge cutoff | Aug 31, 2025 | — | Feb 28, 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- GPT-5.4 mini$16.50
- Grok 4.3$17.50
- Claude Haiku 4.5$20.00
Which should you choose?
Which is better: GPT-5.4 mini, Grok 4.3 or Claude Haiku 4.5?
Grok 4.3 is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63) and Claude Haiku 4.5 (58). It leads on context window. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, GPT-5.4 mini, Grok 4.3 or Claude Haiku 4.5?
Grok 4.3 is cheaper at $1.25 input / $2.50 output per million tokens (official xAI API price). GPT-5.4 mini costs $0.75 input / $4.50 output per million tokens (official OpenAI API price); Claude Haiku 4.5 costs $1.00 input / $5.00 output per million tokens (official Anthropic API price). At a typical mix of three input tokens to one output token, that is $1.56 per million tokens for Grok 4.3 versus $1.69 for GPT-5.4 mini (1.1× as much) and $2.00 for Claude Haiku 4.5 (1.3× as much).
Which scores higher on benchmarks?
Grok 4.3 scores higher on the Capabilities Index (ECI): Grok 4.3 149.2 (#55 of 148), GPT-5.4 mini 148.8 (#56 of 148) and Claude Haiku 4.5 142.4 (#90 of 148). The confidence ranges of the top two overlap (147.6–150.8 vs 147.1–150.5), so treat the gap as small. On individual benchmarks: GPQA Diamond — Grok 4.3 88.8%, GPT-5.4 mini 86.9%, Claude Haiku 4.5 71.2%; OTIS Mock AIME 2024–2025 — Grok 4.3 93.3%, GPT-5.4 mini 88.9%, Claude Haiku 4.5 66.7%; SimpleQA Verified — Grok 4.3 33.2%, GPT-5.4 mini 29.4%, Claude Haiku 4.5 13.2%.
Which is better for coding?
There are no published SWE-bench Verified results for GPT-5.4 mini, Grok 4.3 and Claude Haiku 4.5 yet, so there is no like-for-like coding score. On overall capability, Grok 4.3 leads, which tends to carry over to coding, but test on your own codebase. All three support tool calling for agent workflows.
Which has the bigger context window?
Grok 4.3 has the largest context window at 1,000,000 tokens, against 400,000 for GPT-5.4 mini and 200,000 for Claude Haiku 4.5. Maximum output per response: GPT-5.4 mini up to 128,000, Grok 4.3 up to 30,000, Claude Haiku 4.5 up to 64,000 tokens.
Which can read images, PDFs, audio or video?
GPT-5.4 mini accepts text and images; Grok 4.3 accepts text, images and PDFs; Claude Haiku 4.5 accepts text, images and PDFs. Grok 4.3 handles the widest range of inputs.
Are any of these open source?
No. GPT-5.4 mini, Grok 4.3 and Claude Haiku 4.5 are proprietary and only available through APIs and apps.
Which is newer?
Grok 4.3 is the newest, released Apr 17, 2026. GPT-5.4 mini came out Mar 17, 2026; Claude Haiku 4.5 came out Oct 15, 2025. Knowledge cutoff: GPT-5.4 mini Aug 31, 2025, Claude Haiku 4.5 Feb 28, 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
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